139057825 has 12 divisors (see below), whose sum is σ = 172588780. Its totient is φ = 111144960.

The previous prime is 139057823. The next prime is 139057859. The reversal of 139057825 is 528750931.

It can be written as a sum of positive squares in 6 ways, for example, as 3381921 + 135675904 = 1839^2 + 11648^2 .

It is not a de Polignac number, because 139057825 - 2¹ = 139057823 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (139057823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38497 + ... + 41953.

Almost surely, 2^139057825 is an apocalyptic number.

It is an amenable number.

139057825 is a deficient number, since it is larger than the sum of its proper divisors (33530955).

139057825 is a wasteful number, since it uses less digits than its factorization.

139057825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076 (or 5071 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 139057825 is about 11792.2781938012. The cubic root of 139057825 is about 518.0819687620.

The spelling of 139057825 in words is "one hundred thirty-nine million, fifty-seven thousand, eight hundred twenty-five".