525242290 has 16 divisors (see below), whose sum is σ = 946010520. Its totient is φ = 209969280.

The previous prime is 525242261. The next prime is 525242339. The reversal of 525242290 is 92242525.

It can be written as a sum of positive squares in 4 ways, for example, as 255264529 + 269977761 = 15977^2 + 16431^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2326 + ... + 32494.

Almost surely, 2^525242290 is an apocalyptic number.

525242290 is a deficient number, since it is larger than the sum of its proper divisors (420768230).

525242290 is a wasteful number, since it uses less digits than its factorization.

525242290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31917.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 525242290 is about 22918.1650661653. The cubic root of 525242290 is about 806.8384047600.

The spelling of 525242290 in words is "five hundred twenty-five million, two hundred forty-two thousand, two hundred ninety".