189174825 has 48 divisors (see below), whose sum is σ = 397176960. Its totient is φ = 86477760.

The previous prime is 189174809. The next prime is 189174829. The reversal of 189174825 is 528471981.

It is not a de Polignac number, because 189174825 - 2⁴ = 189174809 is a prime.

It is a super-2 number, since 2×189174825² = 71574228827561250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (189174829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15294 + ... + 24743.

It is an arithmetic number, because the mean of its divisors is an integer number (8274520).

Almost surely, 2^189174825 is an apocalyptic number.

189174825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189174825 is an abundant number, since it is smaller than the sum of its proper divisors (208002135).

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

189174825 is a wasteful number, since it uses less digits than its factorization.

189174825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40063 (or 40052 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 189174825 is about 13754.0839389615. The cubic root of 189174825 is about 574.0562464358.

The spelling of 189174825 in words is "one hundred eighty-nine million, one hundred seventy-four thousand, eight hundred twenty-five".