137669725 has 24 divisors (see below), whose sum is σ = 181412000. Its totient is φ = 103343040.

The previous prime is 137669671. The next prime is 137669737. The reversal of 137669725 is 527966731.

It is not a de Polignac number, because 137669725 - 2²¹ = 135572573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50446 + ... + 53104.

Almost surely, 2^137669725 is an apocalyptic number.

It is an amenable number.

137669725 is a deficient number, since it is larger than the sum of its proper divisors (43742275).

137669725 is a wasteful number, since it uses less digits than its factorization.

137669725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2792 counting only the distinct ones).

The product of its digits is 476280, while the sum is 46.

The square root of 137669725 is about 11733.2742659498. The cubic root of 137669725 is about 516.3523385810.

The spelling of 137669725 in words is "one hundred thirty-seven million, six hundred sixty-nine thousand, seven hundred twenty-five".