25248425856 has 64 divisors (see below), whose sum is σ = 68878768080. Its totient is φ = 8188674048.

The previous prime is 25248425821. The next prime is 25248425869. The reversal of 25248425856 is 65852484252.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 25248425799 and 25248425808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874321 + ... + 902736.

Almost surely, 2^25248425856 is an apocalyptic number.

It is an amenable number.

25248425856 is an abundant number, since it is smaller than the sum of its proper divisors (43630342224).

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

25248425856 is a wasteful number, since it uses less digits than its factorization.

25248425856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777111 (or 1777099 counting only the distinct ones).

The product of its digits is 6144000, while the sum is 51.

The spelling of 25248425856 in words is "twenty-five billion, two hundred forty-eight million, four hundred twenty-five thousand, eight hundred fifty-six".