525040189 has 4 divisors (see below), whose sum is σ = 555924924. Its totient is φ = 494155456.

The previous prime is 525040183. The next prime is 525040199. The reversal of 525040189 is 981040525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 231192025 + 293848164 = 15205^2 + 17142^2 .

It is not a de Polignac number, because 525040189 - 2¹⁵ = 525007421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525040183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15442342 + ... + 15442375.

It is an arithmetic number, because the mean of its divisors is an integer number (138981231).

Almost surely, 2^525040189 is an apocalyptic number.

It is an amenable number.

525040189 is a deficient number, since it is larger than the sum of its proper divisors (30884735).

525040189 is a wasteful number, since it uses less digits than its factorization.

525040189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30884734.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 525040189 is about 22913.7554538753. The cubic root of 525040189 is about 806.7349072756.

The spelling of 525040189 in words is "five hundred twenty-five million, forty thousand, one hundred eighty-nine".