425056353021 has 48 divisors (see below), whose sum is σ = 624127423920. Its totient is φ = 278726676480.

The previous prime is 425056353013. The next prime is 425056353049. The reversal of 425056353021 is 120353650524.

425056353021 is a `hidden beast` number, since 4 + 2 + 50 + 56 + 3 + 530 + 21 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 112720676121 + 312335676900 = 335739^2 + 558870^2 .

It is not a de Polignac number, because 425056353021 - 2³ = 425056353013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425056351021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119496775 + ... + 119500331.

It is an arithmetic number, because the mean of its divisors is an integer number (13002654665).

Almost surely, 2^425056353021 is an apocalyptic number.

It is an amenable number.

425056353021 is a deficient number, since it is larger than the sum of its proper divisors (199071070899).

425056353021 is a wasteful number, since it uses less digits than its factorization.

425056353021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526 (or 4523 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 425056353021 in words is "four hundred twenty-five billion, fifty-six million, three hundred fifty-three thousand, twenty-one".