25120970660 has 24 divisors (see below), whose sum is σ = 53980878336. Its totient is φ = 9814704480.

The previous prime is 25120970653. The next prime is 25120970681. The reversal of 25120970660 is 6607902152.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14604356 + ... + 14606075.

It is an arithmetic number, because the mean of its divisors is an integer number (2249203264).

Almost surely, 2^25120970660 is an apocalyptic number.

25120970660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25120970660 is an abundant number, since it is smaller than the sum of its proper divisors (28859907676).

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

25120970660 is a wasteful number, since it uses less digits than its factorization.

25120970660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29210483 (or 29210481 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 25120970660 in words is "twenty-five billion, one hundred twenty million, nine hundred seventy thousand, six hundred sixty".