25243527872 has 28 divisors (see below), whose sum is σ = 50487072000. Its totient is φ = 12522375936.

The previous prime is 25243527863. The next prime is 25243527877. The reversal of 25243527872 is 27872534252.

25243527872 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25243527877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544747 + ... + 1561002.

Almost surely, 2^25243527872 is an apocalyptic number.

It is an amenable number.

25243527872 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25243527872 is a wasteful number, since it uses less digits than its factorization.

25243527872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105888 (or 3105878 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 47.

The spelling of 25243527872 in words is "twenty-five billion, two hundred forty-three million, five hundred twenty-seven thousand, eight hundred seventy-two".