425934557 has 2 divisors, whose sum is σ = 425934558. Its totient is φ = 425934556.

The previous prime is 425934547. The next prime is 425934559. The reversal of 425934557 is 755439524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425431876 + 502681 = 20626^2 + 709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425934557 is a prime.

Together with 425934559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425934559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212967278 + 212967279.

It is an arithmetic number, because the mean of its divisors is an integer number (212967279).

Almost surely, 2^425934557 is an apocalyptic number.

It is an amenable number.

425934557 is a deficient number, since it is larger than the sum of its proper divisors (1).

425934557 is an equidigital number, since it uses as much as digits as its factorization.

425934557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 44.

The square root of 425934557 is about 20638.1820178038. The cubic root of 425934557 is about 752.3979881067.

The spelling of 425934557 in words is "four hundred twenty-five million, nine hundred thirty-four thousand, five hundred fifty-seven".