525995730 has 48 divisors (see below), whose sum is σ = 1472791320. Its totient is φ = 129475584.

The previous prime is 525995719. The next prime is 525995749. The reversal of 525995730 is 37599525.

525995730 is a `hidden beast` number, since 5 + 2 + 599 + 57 + 3 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 440118441 + 85877289 = 20979^2 + 9267^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223615 + ... + 225954.

Almost surely, 2^525995730 is an apocalyptic number.

525995730 is an abundant number, since it is smaller than the sum of its proper divisors (946795590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525995730 is a wasteful number, since it uses less digits than its factorization.

525995730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449595 (or 449592 counting only the distinct ones).

The product of its (nonzero) digits is 425250, while the sum is 45.

The square root of 525995730 is about 22934.5967917467. The cubic root of 525995730 is about 807.2240133948.

The spelling of 525995730 in words is "five hundred twenty-five million, nine hundred ninety-five thousand, seven hundred thirty".