525857231 has 2 divisors, whose sum is σ = 525857232. Its totient is φ = 525857230.

The previous prime is 525857221. The next prime is 525857249. The reversal of 525857231 is 132758525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525857231 - 2¹⁸ = 525595087 is a prime.

It is a super-2 number, since 2×525857231² = 553051654789974722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525857221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262928615 + 262928616.

It is an arithmetic number, because the mean of its divisors is an integer number (262928616).

Almost surely, 2^525857231 is an apocalyptic number.

525857231 is a deficient number, since it is larger than the sum of its proper divisors (1).

525857231 is an equidigital number, since it uses as much as digits as its factorization.

525857231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 38.

The square root of 525857231 is about 22931.5771590181. The cubic root of 525857231 is about 807.1531576025.

The spelling of 525857231 in words is "five hundred twenty-five million, eight hundred fifty-seven thousand, two hundred thirty-one".