189494525 has 12 divisors (see below), whose sum is σ = 256334784. Its totient is φ = 137814000.

The previous prime is 189494471. The next prime is 189494531. The reversal of 189494525 is 525494981.

It is a happy number.

It is not a de Polignac number, because 189494525 - 2²⁰ = 188445949 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189494525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 344261 + ... + 344810.

It is an arithmetic number, because the mean of its divisors is an integer number (21361232).

Almost surely, 2^189494525 is an apocalyptic number.

It is an amenable number.

189494525 is a deficient number, since it is larger than the sum of its proper divisors (66840259).

189494525 is a wasteful number, since it uses less digits than its factorization.

189494525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689092 (or 689087 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 189494525 is about 13765.7010355448. The cubic root of 189494525 is about 574.3794439410.

The spelling of 189494525 in words is "one hundred eighty-nine million, four hundred ninety-four thousand, five hundred twenty-five".