83715025 has 12 divisors (see below), whose sum is σ = 107387100. Its totient is φ = 64662080.

The previous prime is 83715017. The next prime is 83715029. The reversal of 83715025 is 52051738.

It can be written as a sum of positive squares in 6 ways, for example, as 2119936 + 81595089 = 1456^2 + 9033^2 .

It is not a de Polignac number, because 83715025 - 2³ = 83715017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83715029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57010 + ... + 58459.

It is an arithmetic number, because the mean of its divisors is an integer number (8948925).

Almost surely, 2^83715025 is an apocalyptic number.

It is an amenable number.

83715025 is a deficient number, since it is larger than the sum of its proper divisors (23672075).

83715025 is a wasteful number, since it uses less digits than its factorization.

83715025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115508 (or 115503 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 83715025 is about 9149.5915209369. The cubic root of 83715025 is about 437.4560935530.

The spelling of 83715025 in words is "eighty-three million, seven hundred fifteen thousand, twenty-five".