189641625 has 16 divisors (see below), whose sum is σ = 315564288. Its totient is φ = 101142000.

The previous prime is 189641609. The next prime is 189641651. The reversal of 189641625 is 526146981.

It is not a de Polignac number, because 189641625 - 2⁴ = 189641609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252481 + ... + 253230.

It is an arithmetic number, because the mean of its divisors is an integer number (19722768).

Almost surely, 2^189641625 is an apocalyptic number.

189641625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189641625 is a deficient number, since it is larger than the sum of its proper divisors (125922663).

189641625 is an equidigital number, since it uses as much as digits as its factorization.

189641625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505729 (or 505719 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 189641625 is about 13771.0429888226. The cubic root of 189641625 is about 574.5280311061.

The spelling of 189641625 in words is "one hundred eighty-nine million, six hundred forty-one thousand, six hundred twenty-five".