25685229640560 has 160 divisors (see below), whose sum is σ = 91001305781760. Its totient is φ = 5870767279104.

The previous prime is 25685229640523. The next prime is 25685229640589. The reversal of 25685229640560 is 6504692258652.

It is a happy number.

It is a super-2 number, since 2×25685229640560² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 25685229640494 and 25685229640503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79250199 + ... + 79573641.

It is an arithmetic number, because the mean of its divisors is an integer number (568758161136).

Almost surely, 2^{25685229640560} is an apocalyptic number.

25685229640560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25685229640560 is an abundant number, since it is smaller than the sum of its proper divisors (65316076141200).

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

25685229640560 is a wasteful number, since it uses less digits than its factorization.

25685229640560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370735 (or 370729 counting only the distinct ones).

The product of its (nonzero) digits is 62208000, while the sum is 60.

The spelling of 25685229640560 in words is "twenty-five trillion, six hundred eighty-five billion, two hundred twenty-nine million, six hundred forty thousand, five hundred sixty".