86631225 has 24 divisors (see below), whose sum is σ = 149460672. Its totient is φ = 44193600.

The previous prime is 86631211. The next prime is 86631239. The reversal of 86631225 is 52213668.

It is an interprime number because it is at equal distance from previous prime (86631211) and next prime (86631239).

It is not a de Polignac number, because 86631225 - 2⁶ = 86631161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23386 + ... + 26835.

It is an arithmetic number, because the mean of its divisors is an integer number (6227528).

Almost surely, 2^86631225 is an apocalyptic number.

It is an amenable number.

86631225 is a deficient number, since it is larger than the sum of its proper divisors (62829447).

86631225 is a wasteful number, since it uses less digits than its factorization.

86631225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50257 (or 50252 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 86631225 is about 9307.5896450155. The cubic root of 86631225 is about 442.4777990074.

The spelling of 86631225 in words is "eighty-six million, six hundred thirty-one thousand, two hundred twenty-five".