139769825 has 12 divisors (see below), whose sum is σ = 186646908. Its totient is φ = 103214400.

The previous prime is 139769797. The next prime is 139769843. The reversal of 139769825 is 528967931.

139769825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 46144849 + 93624976 = 6793^2 + 9676^2 .

It is not a de Polignac number, because 139769825 - 2¹⁴ = 139753441 is a prime.

It is a Duffinian 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, 214706 + ... + 215355.

It is an arithmetic number, because the mean of its divisors is an integer number (15553909).

Almost surely, 2^139769825 is an apocalyptic number.

It is an amenable number.

139769825 is a deficient number, since it is larger than the sum of its proper divisors (46877083).

139769825 is a wasteful number, since it uses less digits than its factorization.

139769825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430084 (or 430079 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 139769825 is about 11822.4288959587. The cubic root of 139769825 is about 518.9646868681.

The spelling of 139769825 in words is "one hundred thirty-nine million, seven hundred sixty-nine thousand, eight hundred twenty-five".