25012571568 has 20 divisors (see below), whose sum is σ = 64615810008. Its totient is φ = 8337523840.

The previous prime is 25012571567. The next prime is 25012571609. The reversal of 25012571568 is 86517521052.

It is not an unprimeable number, because it can be changed into a prime (25012571567) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 260547573 + ... + 260547668.

Almost surely, 2^25012571568 is an apocalyptic number.

It is an amenable number.

25012571568 is an abundant number, since it is smaller than the sum of its proper divisors (39603238440).

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

25012571568 is a wasteful number, since it uses less digits than its factorization.

25012571568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521095252 (or 521095246 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 25012571568 in words is "twenty-five billion, twelve million, five hundred seventy-one thousand, five hundred sixty-eight".