25012502442 has 12 divisors (see below), whose sum is σ = 54193755330. Its totient is φ = 8337500808.

The previous prime is 25012502413. The next prime is 25012502513. The reversal of 25012502442 is 24420521052.

It can be written as a sum of positive squares in only one way, i.e., 24988970241 + 23532201 = 158079^2 + 4851^2 .

It is a super-2 number, since 2×25012502442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694791717 + ... + 694791752.

Almost surely, 2^25012502442 is an apocalyptic number.

25012502442 is an abundant number, since it is smaller than the sum of its proper divisors (29181252888).

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

25012502442 is a wasteful number, since it uses less digits than its factorization.

25012502442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389583477 (or 1389583474 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 25012502442 in words is "twenty-five billion, twelve million, five hundred two thousand, four hundred forty-two".