25398794712 has 32 divisors (see below), whose sum is σ = 63511519680. Its totient is φ = 8464327200.

The previous prime is 25398794693. The next prime is 25398794719. The reversal of 25398794712 is 21749789352.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25398794719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12058 + ... + 225705.

It is an arithmetic number, because the mean of its divisors is an integer number (1984734990).

Almost surely, 2^25398794712 is an apocalyptic number.

It is an amenable number.

25398794712 is an abundant number, since it is smaller than the sum of its proper divisors (38112724968).

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

25398794712 is a wasteful number, since it uses less digits than its factorization.

25398794712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242223 (or 242219 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 57.

The spelling of 25398794712 in words is "twenty-five billion, three hundred ninety-eight million, seven hundred ninety-four thousand, seven hundred twelve".