9137725 has 6 divisors (see below), whose sum is σ = 11330810. Its totient is φ = 7310160.

The previous prime is 9137707. The next prime is 9137729. The reversal of 9137725 is 5277319.

It can be written as a sum of positive squares in 3 ways, for example, as 119716 + 9018009 = 346^2 + 3003^2 .

It is not a de Polignac number, because 9137725 - 2⁹ = 9137213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9137729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 182730 + ... + 182779.

Almost surely, 2^9137725 is an apocalyptic number.

It is an amenable number.

9137725 is a deficient number, since it is larger than the sum of its proper divisors (2193085).

9137725 is a wasteful number, since it uses less digits than its factorization.

9137725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365519 (or 365514 counting only the distinct ones).

The product of its digits is 13230, while the sum is 34.

The square root of 9137725 is about 3022.8670165920. The cubic root of 9137725 is about 209.0640509410.

It can be divided in two parts, 9 and 137725, that multiplied together give a triangular number (1239525 = T₁₅₇₄).

The spelling of 9137725 in words is "nine million, one hundred thirty-seven thousand, seven hundred twenty-five".