525830257 has 2 divisors, whose sum is σ = 525830258. Its totient is φ = 525830256.

The previous prime is 525830203. The next prime is 525830269. The reversal of 525830257 is 752038525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462723121 + 63107136 = 21511^2 + 7944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525830257 is a prime.

It is not a weakly prime, because it can be changed into another prime (525830287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262915128 + 262915129.

It is an arithmetic number, because the mean of its divisors is an integer number (262915129).

Almost surely, 2^525830257 is an apocalyptic number.

It is an amenable number.

525830257 is a deficient number, since it is larger than the sum of its proper divisors (1).

525830257 is an equidigital number, since it uses as much as digits as its factorization.

525830257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 525830257 is about 22930.9890105072. The cubic root of 525830257 is about 807.1393563143.

The spelling of 525830257 in words is "five hundred twenty-five million, eight hundred thirty thousand, two hundred fifty-seven".