25355858008 has 48 divisors (see below), whose sum is σ = 51596778240. Its totient is φ = 11612552640.

The previous prime is 25355857997. The next prime is 25355858041. The reversal of 25355858008 is 80085855352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1777641 + ... + 1791847.

It is an arithmetic number, because the mean of its divisors is an integer number (1074932880).

Almost surely, 2^25355858008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25355858008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25798389120).

25355858008 is an abundant number, since it is smaller than the sum of its proper divisors (26240920232).

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

25355858008 is a wasteful number, since it uses less digits than its factorization.

25355858008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14488 (or 14353 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 49.

The spelling of 25355858008 in words is "twenty-five billion, three hundred fifty-five million, eight hundred fifty-eight thousand, eight".