25665237060 has 48 divisors (see below), whose sum is σ = 71962732800. Its totient is φ = 6834532864.

The previous prime is 25665237047. The next prime is 25665237061. The reversal of 25665237060 is 6073256652.

It is not an unprimeable number, because it can be changed into a prime (25665237061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254325 + ... + 340604.

It is an arithmetic number, because the mean of its divisors is an integer number (1499223600).

Almost surely, 2^25665237060 is an apocalyptic number.

25665237060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25665237060 is an abundant number, since it is smaller than the sum of its proper divisors (46297495740).

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

25665237060 is a wasteful number, since it uses less digits than its factorization.

25665237060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595660 (or 595658 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 25665237060 in words is "twenty-five billion, six hundred sixty-five million, two hundred thirty-seven thousand, sixty".