25665930120 has 64 divisors (see below), whose sum is σ = 77760181440. Its totient is φ = 6776480000.

The previous prime is 25665930107. The next prime is 25665930181. The reversal of 25665930120 is 2103956652.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046706 + ... + 1070945.

It is an arithmetic number, because the mean of its divisors is an integer number (1215002835).

Almost surely, 2^25665930120 is an apocalyptic number.

25665930120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25665930120 is an abundant number, since it is smaller than the sum of its proper divisors (52094251320).

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

25665930120 is a wasteful number, since it uses less digits than its factorization.

25665930120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117766 (or 2117762 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 25665930120 in words is "twenty-five billion, six hundred sixty-five million, nine hundred thirty thousand, one hundred twenty".