83157825 has 12 divisors (see below), whose sum is σ = 137487728. Its totient is φ = 44350800.

The previous prime is 83157821. The next prime is 83157839. The reversal of 83157825 is 52875138.

It is not a de Polignac number, because 83157825 - 2² = 83157821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83157821) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 554311 + ... + 554460.

Almost surely, 2^83157825 is an apocalyptic number.

It is an amenable number.

83157825 is a deficient number, since it is larger than the sum of its proper divisors (54329903).

83157825 is a wasteful number, since it uses less digits than its factorization.

83157825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108784 (or 1108779 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 83157825 is about 9119.0912376179. The cubic root of 83157825 is about 436.4833755407.

The spelling of 83157825 in words is "eighty-three million, one hundred fifty-seven thousand, eight hundred twenty-five".