625015139 has 6 divisors (see below), whose sum is σ = 727058484. Its totient is φ = 535727220.

The previous prime is 625015129. The next prime is 625015147. The reversal of 625015139 is 931510526.

It is not a de Polignac number, because 625015139 - 2¹⁶ = 624949603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625015129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6377657 + ... + 6377754.

It is an arithmetic number, because the mean of its divisors is an integer number (121176414).

Almost surely, 2^625015139 is an apocalyptic number.

625015139 is a deficient number, since it is larger than the sum of its proper divisors (102043345).

625015139 is a wasteful number, since it uses less digits than its factorization.

625015139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12755425 (or 12755418 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 625015139 is about 25000.3027781665. The cubic root of 625015139 is about 854.9948765695.

The spelling of 625015139 in words is "six hundred twenty-five million, fifteen thousand, one hundred thirty-nine".