525345257 has 2 divisors, whose sum is σ = 525345258. Its totient is φ = 525345256.

The previous prime is 525345221. The next prime is 525345281. The reversal of 525345257 is 752543525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492351721 + 32993536 = 22189^2 + 5744^2 .

It is a cyclic number.

It is not a de Polignac number, because 525345257 - 2¹² = 525341161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525345257.

It is not a weakly prime, because it can be changed into another prime (525345757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262672628 + 262672629.

It is an arithmetic number, because the mean of its divisors is an integer number (262672629).

Almost surely, 2^525345257 is an apocalyptic number.

It is an amenable number.

525345257 is a deficient number, since it is larger than the sum of its proper divisors (1).

525345257 is an equidigital number, since it uses as much as digits as its factorization.

525345257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 210000, while the sum is 38.

The square root of 525345257 is about 22920.4113619280. The cubic root of 525345257 is about 806.8911247481.

The spelling of 525345257 in words is "five hundred twenty-five million, three hundred forty-five thousand, two hundred fifty-seven".