425108632581 has 12 divisors (see below), whose sum is σ = 627110607552. Its totient is φ = 277375845096.

The previous prime is 425108632523. The next prime is 425108632649. The reversal of 425108632581 is 185236801524.

425108632581 is a `hidden beast` number, since 4 + 2 + 5 + 1 + 0 + 8 + 63 + 2 + 581 = 666.

425108632581 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 425108632581 - 2⁶ = 425108632517 is a prime.

It is a super-3 number, since 3×425108632581³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425108632181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502492051 + ... + 502492896.

It is an arithmetic number, because the mean of its divisors is an integer number (52259217296).

Almost surely, 2^425108632581 is an apocalyptic number.

It is an amenable number.

425108632581 is a deficient number, since it is larger than the sum of its proper divisors (202001974971).

425108632581 is a wasteful number, since it uses less digits than its factorization.

425108632581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004985000 (or 1004984997 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 425108632581 in words is "four hundred twenty-five billion, one hundred eight million, six hundred thirty-two thousand, five hundred eighty-one".