425055551969 has 2 divisors, whose sum is σ = 425055551970. Its totient is φ = 425055551968.

The previous prime is 425055551959. The next prime is 425055552011. The reversal of 425055551969 is 969155550524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394807385569 + 30248166400 = 628337^2 + 173920^2 .

It is a cyclic number.

It is not a de Polignac number, because 425055551969 - 2⁴ = 425055551953 is a prime.

It is a super-2 number, since 2×425055551969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425055551959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212527775984 + 212527775985.

It is an arithmetic number, because the mean of its divisors is an integer number (212527775985).

Almost surely, 2^425055551969 is an apocalyptic number.

It is an amenable number.

425055551969 is a deficient number, since it is larger than the sum of its proper divisors (1).

425055551969 is an equidigital number, since it uses as much as digits as its factorization.

425055551969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150000, while the sum is 56.

The spelling of 425055551969 in words is "four hundred twenty-five billion, fifty-five million, five hundred fifty-one thousand, nine hundred sixty-nine".