425999956 has 12 divisors (see below), whose sum is σ = 752467968. Its totient is φ = 211009112.

The previous prime is 425999953. The next prime is 425999983. The reversal of 425999956 is 659999524.

It is a self number, because there is not a number n which added to its sum of digits gives 425999956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425999953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497236 + ... + 498091.

It is an arithmetic number, because the mean of its divisors is an integer number (62705664).

Almost surely, 2^425999956 is an apocalyptic number.

It is an amenable number.

425999956 is a deficient number, since it is larger than the sum of its proper divisors (326468012).

425999956 is a wasteful number, since it uses less digits than its factorization.

425999956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995438 (or 995436 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 58.

The square root of 425999956 is about 20639.7663746468. The cubic root of 425999956 is about 752.4364944586.

The spelling of 425999956 in words is "four hundred twenty-five million, nine hundred ninety-nine thousand, nine hundred fifty-six".