15015025139 has 4 divisors (see below), whose sum is σ = 15805289640. Its totient is φ = 14224760640.

The previous prime is 15015025087. The next prime is 15015025183. The reversal of 15015025139 is 93152051051.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15015025139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15015025339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395132222 + ... + 395132259.

It is an arithmetic number, because the mean of its divisors is an integer number (3951322410).

Almost surely, 2^15015025139 is an apocalyptic number.

15015025139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

15015025139 is a deficient number, since it is larger than the sum of its proper divisors (790264501).

15015025139 is an equidigital number, since it uses as much as digits as its factorization.

15015025139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790264500.

The product of its (nonzero) digits is 6750, while the sum is 32.

The spelling of 15015025139 in words is "fifteen billion, fifteen million, twenty-five thousand, one hundred thirty-nine".