25257585555860 has 96 divisors (see below), whose sum is σ = 60765970003200. Its totient is φ = 8638656058368.

The previous prime is 25257585555833. The next prime is 25257585555869. The reversal of 25257585555860 is 6855558575252.

It is a super-2 number, since 2×25257585555860² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25257585555869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112721216 + ... + 112945064.

It is an arithmetic number, because the mean of its divisors is an integer number (632978854200).

Almost surely, 2^{25257585555860} is an apocalyptic number.

25257585555860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25257585555860 is an abundant number, since it is smaller than the sum of its proper divisors (35508384447340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25257585555860 is a wasteful number, since it uses less digits than its factorization.

25257585555860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225825 (or 225823 counting only the distinct ones).

The product of its (nonzero) digits is 840000000, while the sum is 68.

The spelling of 25257585555860 in words is "twenty-five trillion, two hundred fifty-seven billion, five hundred eighty-five million, five hundred fifty-five thousand, eight hundred sixty".