2500000000

Appears in sequences

• a(n) = floor(10^10/n).at n=3A057072
• Numbers n such that sum of the cubes of the distinct prime factors of n equals the sum of the cubes of the digits of n.at n=22A067170
• Expansion of (1 + 8x - 42x^2 - 392x^3)/(1 - 99x^2 + 2450x^4).at n=11A097114
• Squares n^2 whose decimal expansion contains n as a substring.at n=28A161783
• Squares that remain squares prefixed with a 2.at n=13A167036
• Squares that remain squares when prefixed with a 6.at n=14A167041
• Number of (2+1) X (n+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 1,0 or 1,2.at n=12A264273
• Numbers m whose distinct prime factors are exactly the same as the distinct prime factors of each of the numbers obtained by deleting any single digit in the decimal expansion of m.at n=18A307764
• Lexicographically earliest permutation of the positive integers such that the successive cumulative products reproduce the sequence itself, digit by digit.at n=24A364697