139597925 has 12 divisors (see below), whose sum is σ = 180628320. Its totient is φ = 106822320.

The previous prime is 139597873. The next prime is 139597933. The reversal of 139597925 is 529795931.

It is a happy number.

It is not a de Polignac number, because 139597925 - 2⁸ = 139597669 is a prime.

It is a congruent 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, 120815 + ... + 121964.

It is an arithmetic number, because the mean of its divisors is an integer number (15052360).

Almost surely, 2^139597925 is an apocalyptic number.

It is an amenable number.

139597925 is a deficient number, since it is larger than the sum of its proper divisors (41030395).

139597925 is a wasteful number, since it uses less digits than its factorization.

139597925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242812 (or 242807 counting only the distinct ones).

The product of its digits is 765450, while the sum is 50.

The square root of 139597925 is about 11815.1565795803. The cubic root of 139597925 is about 518.7518449637.

The spelling of 139597925 in words is "one hundred thirty-nine million, five hundred ninety-seven thousand, nine hundred twenty-five".