525300989 has 4 divisors (see below), whose sum is σ = 525566556. Its totient is φ = 525035424.

The previous prime is 525300977. The next prime is 525300991. The reversal of 525300989 is 989003525.

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 151536100 + 373764889 = 12310^2 + 19333^2 .

It is a cyclic number.

It is not a de Polignac number, because 525300989 - 2⁴ = 525300973 is a prime.

It is a super-2 number, since 2×525300989² = 551882258088756242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525300929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129794 + ... + 133779.

It is an arithmetic number, because the mean of its divisors is an integer number (131391639).

Almost surely, 2^525300989 is an apocalyptic number.

It is an amenable number.

525300989 is a deficient number, since it is larger than the sum of its proper divisors (265567).

525300989 is a wasteful number, since it uses less digits than its factorization.

525300989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265566.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 525300989 is about 22919.4456521095. The cubic root of 525300989 is about 806.8684599962.

The spelling of 525300989 in words is "five hundred twenty-five million, three hundred thousand, nine hundred eighty-nine".