425025022921 has 2 divisors, whose sum is σ = 425025022922. Its totient is φ = 425025022920.

The previous prime is 425025022913. The next prime is 425025022927. The reversal of 425025022921 is 129220520524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259814478400 + 165210544521 = 509720^2 + 406461^2 .

It is a cyclic number.

It is not a de Polignac number, because 425025022921 - 2³ = 425025022913 is a prime.

It is not a weakly prime, because it can be changed into another prime (425025022927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212512511460 + 212512511461.

It is an arithmetic number, because the mean of its divisors is an integer number (212512511461).

Almost surely, 2^425025022921 is an apocalyptic number.

It is an amenable number.

425025022921 is a deficient number, since it is larger than the sum of its proper divisors (1).

425025022921 is an equidigital number, since it uses as much as digits as its factorization.

425025022921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 425025022921 in words is "four hundred twenty-five billion, twenty-five million, twenty-two thousand, nine hundred twenty-one".