139830625 has 45 divisors (see below), whose sum is σ = 196631589. Its totient is φ = 99330000.

The previous prime is 139830617. The next prime is 139830629. The reversal of 139830625 is 526038931.

The square root of 139830625 is 11825.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 10962721 + 128867904 = 3311^2 + 11352^2 .

It is not a de Polignac number, because 139830625 - 2³ = 139830617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139830629) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3251854 + ... + 3251896.

Almost surely, 2^139830625 is an apocalyptic number.

139830625 is the 11825-th square number.

139830625 is the 5913-rd centered octagonal number.

It is an amenable number.

139830625 is a deficient number, since it is larger than the sum of its proper divisors (56800964).

139830625 is an frugal number, since it uses more digits than its factorization.

139830625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The cubic root of 139830625 is about 519.0399259952.

It can be divided in two parts, 1398 and 30625, that added together give a palindrome (32023).

The spelling of 139830625 in words is "one hundred thirty-nine million, eight hundred thirty thousand, six hundred twenty-five".