425826145081 has 2 divisors, whose sum is σ = 425826145082. Its totient is φ = 425826145080.

The previous prime is 425826145061. The next prime is 425826145111. The reversal of 425826145081 is 180541628524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224620071481 + 201206073600 = 473941^2 + 448560^2 .

It is a cyclic number.

It is not a de Polignac number, because 425826145081 - 2²⁵ = 425792590649 is a prime.

It is a super-2 number, since 2×425826145081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425826145061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212913072540 + 212913072541.

It is an arithmetic number, because the mean of its divisors is an integer number (212913072541).

Almost surely, 2^425826145081 is an apocalyptic number.

It is an amenable number.

425826145081 is a deficient number, since it is larger than the sum of its proper divisors (1).

425826145081 is an equidigital number, since it uses as much as digits as its factorization.

425826145081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 425826145081 in words is "four hundred twenty-five billion, eight hundred twenty-six million, one hundred forty-five thousand, eighty-one".