83637225 has 96 divisors (see below), whose sum is σ = 181575680. Its totient is φ = 36936000.

The previous prime is 83637217. The next prime is 83637241. The reversal of 83637225 is 52273638.

It is not a de Polignac number, because 83637225 - 2³ = 83637217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83637225.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 146190 + ... + 146760.

Almost surely, 2^83637225 is an apocalyptic number.

It is an amenable number.

83637225 is an abundant number, since it is smaller than the sum of its proper divisors (97938455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83637225 is a wasteful number, since it uses less digits than its factorization.

83637225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 617 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 83637225 is about 9145.3389767684. The cubic root of 83637225 is about 437.3205359171.

The spelling of 83637225 in words is "eighty-three million, six hundred thirty-seven thousand, two hundred twenty-five".