425425520281 has 2 divisors, whose sum is σ = 425425520282. Its totient is φ = 425425520280.

The previous prime is 425425520243. The next prime is 425425520291. The reversal of 425425520281 is 182025524524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401777231881 + 23648288400 = 633859^2 + 153780^2 .

It is a cyclic number.

It is not a de Polignac number, because 425425520281 - 2¹⁹ = 425424995993 is a prime.

It is a super-2 number, since 2×425425520281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425425520291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212712760140 + 212712760141.

It is an arithmetic number, because the mean of its divisors is an integer number (212712760141).

Almost surely, 2^425425520281 is an apocalyptic number.

It is an amenable number.

425425520281 is a deficient number, since it is larger than the sum of its proper divisors (1).

425425520281 is an equidigital number, since it uses as much as digits as its factorization.

425425520281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256000, while the sum is 40.

The spelling of 425425520281 in words is "four hundred twenty-five billion, four hundred twenty-five million, five hundred twenty thousand, two hundred eighty-one".