425245613021 has 2 divisors, whose sum is σ = 425245613022. Its totient is φ = 425245613020.

The previous prime is 425245613003. The next prime is 425245613129. The reversal of 425245613021 is 120316542524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425117040100 + 128572921 = 652010^2 + 11339^2 .

It is a cyclic number.

It is not a de Polignac number, because 425245613021 - 2³⁴ = 408065743837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425245603021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212622806510 + 212622806511.

It is an arithmetic number, because the mean of its divisors is an integer number (212622806511).

Almost surely, 2^425245613021 is an apocalyptic number.

It is an amenable number.

425245613021 is a deficient number, since it is larger than the sum of its proper divisors (1).

425245613021 is an equidigital number, since it uses as much as digits as its factorization.

425245613021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 425245613021 in words is "four hundred twenty-five billion, two hundred forty-five million, six hundred thirteen thousand, twenty-one".