825726172 has 6 divisors (see below), whose sum is σ = 1445020808. Its totient is φ = 412863084.

The previous prime is 825726131. The next prime is 825726173. The reversal of 825726172 is 271627528.

It is a happy number.

It is a super-2 number, since 2×825726172² = 1363647422251547168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825726173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103215768 + ... + 103215775.

Almost surely, 2^825726172 is an apocalyptic number.

It is an amenable number.

825726172 is a deficient number, since it is larger than the sum of its proper divisors (619294636).

825726172 is a wasteful number, since it uses less digits than its factorization.

825726172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206431547 (or 206431545 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 825726172 is about 28735.4514841859. The cubic root of 825726172 is about 938.1638261899.

The spelling of 825726172 in words is "eight hundred twenty-five million, seven hundred twenty-six thousand, one hundred seventy-two".