15025015138 has 48 divisors (see below), whose sum is σ = 26401114080. Its totient is φ = 6394266816.

The previous prime is 15025015129. The next prime is 15025015139. The reversal of 15025015138 is 83151052051.

It is not an unprimeable number, because it can be changed into a prime (15025015139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12657381 + ... + 12658567.

It is an arithmetic number, because the mean of its divisors is an integer number (550023210).

Almost surely, 2^15025015138 is an apocalyptic number.

15025015138 is a deficient number, since it is larger than the sum of its proper divisors (11376098942).

15025015138 is a wasteful number, since it uses less digits than its factorization.

15025015138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 15025015138 its reverse (83151052051), we get a palindrome (98176067189).

The spelling of 15025015138 in words is "fifteen billion, twenty-five million, fifteen thousand, one hundred thirty-eight".