25313597442 has 32 divisors (see below), whose sum is σ = 64288502400. Its totient is φ = 7232456304.

The previous prime is 25313597423. The next prime is 25313597453. The reversal of 25313597442 is 24479531352.

It is a happy number.

25313597442 is a `hidden beast` number, since 2 + 5 + 3 + 13 + 597 + 4 + 42 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33483217 + ... + 33483972.

It is an arithmetic number, because the mean of its divisors is an integer number (2009015700).

Almost surely, 2^25313597442 is an apocalyptic number.

25313597442 is an abundant number, since it is smaller than the sum of its proper divisors (38974904958).

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

25313597442 is a wasteful number, since it uses less digits than its factorization.

25313597442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66967207 (or 66967201 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The spelling of 25313597442 in words is "twenty-five billion, three hundred thirteen million, five hundred ninety-seven thousand, four hundred forty-two".