425595557 has 2 divisors, whose sum is σ = 425595558. Its totient is φ = 425595556.

The previous prime is 425595523. The next prime is 425595563. The reversal of 425595557 is 755595524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384199201 + 41396356 = 19601^2 + 6434^2 .

It is a cyclic number.

It is not a de Polignac number, because 425595557 - 2¹² = 425591461 is a prime.

It is a super-2 number, since 2×425595557² = 362263156276280498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425595257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212797778 + 212797779.

It is an arithmetic number, because the mean of its divisors is an integer number (212797779).

Almost surely, 2^425595557 is an apocalyptic number.

It is an amenable number.

425595557 is a deficient number, since it is larger than the sum of its proper divisors (1).

425595557 is an equidigital number, since it uses as much as digits as its factorization.

425595557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1575000, while the sum is 47.

The square root of 425595557 is about 20629.9674502894. The cubic root of 425595557 is about 752.1983247143.

The spelling of 425595557 in words is "four hundred twenty-five million, five hundred ninety-five thousand, five hundred fifty-seven".