525430657 has 2 divisors, whose sum is σ = 525430658. Its totient is φ = 525430656.

The previous prime is 525430649. The next prime is 525430681. The reversal of 525430657 is 756034525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520250481 + 5180176 = 22809^2 + 2276^2 .

It is a cyclic number.

It is not a de Polignac number, because 525430657 - 2³ = 525430649 is a prime.

It is not a weakly prime, because it can be changed into another prime (525430057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262715328 + 262715329.

It is an arithmetic number, because the mean of its divisors is an integer number (262715329).

Almost surely, 2^525430657 is an apocalyptic number.

It is an amenable number.

525430657 is a deficient number, since it is larger than the sum of its proper divisors (1).

525430657 is an equidigital number, since it uses as much as digits as its factorization.

525430657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 525430657 is about 22922.2742545324. The cubic root of 525430657 is about 806.9348450555.

The spelling of 525430657 in words is "five hundred twenty-five million, four hundred thirty thousand, six hundred fifty-seven".