83408725 has 12 divisors (see below), whose sum is σ = 103556740. Its totient is φ = 66643200.

The previous prime is 83408701. The next prime is 83408761. The reversal of 83408725 is 52780438.

It can be written as a sum of positive squares in 6 ways, for example, as 21911761 + 61496964 = 4681^2 + 7842^2 .

It is not a de Polignac number, because 83408725 - 2¹³ = 83400533 is a prime.

It is a super-2 number, since 2×83408725² = 13914030812251250, which contains 22 as substring.

It is a congruent 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, 25165 + ... + 28285.

Almost surely, 2^83408725 is an apocalyptic number.

It is an amenable number.

83408725 is a deficient number, since it is larger than the sum of its proper divisors (20148015).

83408725 is a wasteful number, since it uses less digits than its factorization.

83408725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 83408725 is about 9132.8377298625. The cubic root of 83408725 is about 436.9219140397.

The spelling of 83408725 in words is "eighty-three million, four hundred eight thousand, seven hundred twenty-five".