189613525 has 6 divisors (see below), whose sum is σ = 235120802. Its totient is φ = 151690800.

The previous prime is 189613519. The next prime is 189613537. The reversal of 189613525 is 525316981.

It can be written as a sum of positive squares in 3 ways, for example, as 67930564 + 121682961 = 8242^2 + 11031^2 .

It is not a de Polignac number, because 189613525 - 2³ = 189613517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3792246 + ... + 3792295.

Almost surely, 2^189613525 is an apocalyptic number.

It is an amenable number.

189613525 is a deficient number, since it is larger than the sum of its proper divisors (45507277).

189613525 is an equidigital number, since it uses as much as digits as its factorization.

189613525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7584551 (or 7584546 counting only the distinct ones).

The product of its digits is 64800, while the sum is 40.

The square root of 189613525 is about 13770.0226942442. The cubic root of 189613525 is about 574.4996529567.

The spelling of 189613525 in words is "one hundred eighty-nine million, six hundred thirteen thousand, five hundred twenty-five".