25025150138 has 24 divisors (see below), whose sum is σ = 39457861716. Its totient is φ = 11902334400.

The previous prime is 25025150123. The next prime is 25025150147. The reversal of 25025150138 is 83105152052.

It can be written as a sum of positive squares in 2 ways, for example, as 23036257729 + 1988892409 = 151777^2 + 44597^2 .

It is a Curzon 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, 126158 + ... + 256838.

Almost surely, 2^25025150138 is an apocalyptic number.

25025150138 is a deficient number, since it is larger than the sum of its proper divisors (14432711578).

25025150138 is a wasteful number, since it uses less digits than its factorization.

25025150138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130910 (or 130887 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 25025150138 in words is "twenty-five billion, twenty-five million, one hundred fifty thousand, one hundred thirty-eight".