425421325997 has 2 divisors, whose sum is σ = 425421325998. Its totient is φ = 425421325996.

The previous prime is 425421325937. The next prime is 425421326003. The reversal of 425421325997 is 799523124524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416452099561 + 8969226436 = 645331^2 + 94706^2 .

It is a cyclic number.

It is not a de Polignac number, because 425421325997 - 2⁶ = 425421325933 is a prime.

It is a super-2 number, since 2×425421325997² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425421325937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212710662998 + 212710662999.

It is an arithmetic number, because the mean of its divisors is an integer number (212710662999).

Almost surely, 2^425421325997 is an apocalyptic number.

It is an amenable number.

425421325997 is a deficient number, since it is larger than the sum of its proper divisors (1).

425421325997 is an equidigital number, since it uses as much as digits as its factorization.

425421325997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The spelling of 425421325997 in words is "four hundred twenty-five billion, four hundred twenty-one million, three hundred twenty-five thousand, nine hundred ninety-seven".