863225172 has 36 divisors (see below), whose sum is σ = 2232790560. Its totient is φ = 281049552.

The previous prime is 863225123. The next prime is 863225191. The reversal of 863225172 is 271522368.

863225172 is a `hidden beast` number, since 8 + 632 + 2 + 5 + 17 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 277272 + ... + 280367.

It is an arithmetic number, because the mean of its divisors is an integer number (62021960).

Almost surely, 2^863225172 is an apocalyptic number.

It is an amenable number.

863225172 is an abundant number, since it is smaller than the sum of its proper divisors (1369565388).

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

863225172 is a wasteful number, since it uses less digits than its factorization.

863225172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557692 (or 557687 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 863225172 is about 29380.6938651898. The cubic root of 863225172 is about 952.1558324219.

The spelling of 863225172 in words is "eight hundred sixty-three million, two hundred twenty-five thousand, one hundred seventy-two".