25265236560 has 80 divisors (see below), whose sum is σ = 78548204736. Its totient is φ = 6717958144.

The previous prime is 25265236541. The next prime is 25265236571. The reversal of 25265236560 is 6563256252.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 68409 + ... + 234968.

Almost surely, 2^25265236560 is an apocalyptic number.

25265236560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25265236560 is an abundant number, since it is smaller than the sum of its proper divisors (53282968176).

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

25265236560 is a wasteful number, since it uses less digits than its factorization.

25265236560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303740 (or 303734 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 25265236560 in words is "twenty-five billion, two hundred sixty-five million, two hundred thirty-six thousand, five hundred sixty".