425117556 has 36 divisors (see below), whose sum is σ = 1121326752. Its totient is φ = 135544464.

The previous prime is 425117551. The next prime is 425117599. The reversal of 425117556 is 655711524.

425117556 is a `hidden beast` number, since 42 + 51 + 17 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 425117556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425117551) 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, 255886 + ... + 257541.

Almost surely, 2^425117556 is an apocalyptic number.

425117556 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

425117556 is an abundant number, since it is smaller than the sum of its proper divisors (696209196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425117556 is a wasteful number, since it uses less digits than its factorization.

425117556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513460 (or 513455 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 425117556 is about 20618.3790827504. The cubic root of 425117556 is about 751.9166126226.

The spelling of 425117556 in words is "four hundred twenty-five million, one hundred seventeen thousand, five hundred fifty-six".