139126925 has 36 divisors (see below), whose sum is σ = 202392180. Its totient is φ = 94590720.

The previous prime is 139126921. The next prime is 139126927. The reversal of 139126925 is 529621931.

It can be written as a sum of positive squares in 6 ways, for example, as 499849 + 138627076 = 707^2 + 11774^2 .

It is not a de Polignac number, because 139126925 - 2² = 139126921 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139126921) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 167411 + ... + 168239.

It is an arithmetic number, because the mean of its divisors is an integer number (5622005).

Almost surely, 2^139126925 is an apocalyptic number.

It is an amenable number.

139126925 is a deficient number, since it is larger than the sum of its proper divisors (63265255).

139126925 is a wasteful number, since it uses less digits than its factorization.

139126925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 978 counting only the distinct ones).

The product of its digits is 29160, while the sum is 38.

The square root of 139126925 is about 11795.2077133046. The cubic root of 139126925 is about 518.1677688861.

The spelling of 139126925 in words is "one hundred thirty-nine million, one hundred twenty-six thousand, nine hundred twenty-five".