525336257 has 4 divisors (see below), whose sum is σ = 525952980. Its totient is φ = 524719536.

The previous prime is 525336233. The next prime is 525336269. The reversal of 525336257 is 752633525.

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 27867841 + 497468416 = 5279^2 + 22304^2 .

It is a cyclic number.

It is not a de Polignac number, because 525336257 - 2¹⁸ = 525074113 is a prime.

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 525336257.

It is not an unprimeable number, because it can be changed into a prime (525336277) 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, 307082 + ... + 308787.

It is an arithmetic number, because the mean of its divisors is an integer number (131488245).

Almost surely, 2^525336257 is an apocalyptic number.

It is an amenable number.

525336257 is a deficient number, since it is larger than the sum of its proper divisors (616723).

525336257 is an equidigital number, since it uses as much as digits as its factorization.

525336257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616722.

The product of its digits is 189000, while the sum is 38.

The square root of 525336257 is about 22920.2150295323. The cubic root of 525336257 is about 806.8865169456.

The spelling of 525336257 in words is "five hundred twenty-five million, three hundred thirty-six thousand, two hundred fifty-seven".