15025517138 has 16 divisors (see below), whose sum is σ = 23407954560. Its totient is φ = 7228284336.

The previous prime is 15025517093. The next prime is 15025517161. The reversal of 15025517138 is 83171552051.

It is a super-2 number, since 2×15025517138² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349081 + ... + 1360172.

It is an arithmetic number, because the mean of its divisors is an integer number (1462997160).

Almost surely, 2^15025517138 is an apocalyptic number.

15025517138 is a deficient number, since it is larger than the sum of its proper divisors (8382437422).

15025517138 is a wasteful number, since it uses less digits than its factorization.

15025517138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709361.

The product of its (nonzero) digits is 42000, while the sum is 38.

The spelling of 15025517138 in words is "fifteen billion, twenty-five million, five hundred seventeen thousand, one hundred thirty-eight".