189526725 has 18 divisors (see below), whose sum is σ = 339463826. Its totient is φ = 101080800.

The previous prime is 189526721. The next prime is 189526747. The reversal of 189526725 is 527625981.

It can be written as a sum of positive squares in 3 ways, for example, as 161604 + 189365121 = 402^2 + 13761^2 .

It is not a de Polignac number, because 189526725 - 2² = 189526721 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189526721) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 420946 + ... + 421395.

Almost surely, 2^189526725 is an apocalyptic number.

189526725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189526725 is a deficient number, since it is larger than the sum of its proper divisors (149937101).

189526725 is a wasteful number, since it uses less digits than its factorization.

189526725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842357 (or 842349 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 189526725 is about 13766.8705594264. The cubic root of 189526725 is about 574.4119760518.

The spelling of 189526725 in words is "one hundred eighty-nine million, five hundred twenty-six thousand, seven hundred twenty-five".