425604821956 has 12 divisors (see below), whose sum is σ = 749268370368. Its totient is φ = 211528144712.

The previous prime is 425604821909. The next prime is 425604821959. The reversal of 425604821956 is 659128406524.

It is a super-2 number, since 2×425604821956² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (425604821959) 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, 318565816 + ... + 318567151.

It is an arithmetic number, because the mean of its divisors is an integer number (62439030864).

Almost surely, 2^425604821956 is an apocalyptic number.

It is an amenable number.

425604821956 is a deficient number, since it is larger than the sum of its proper divisors (323663548412).

425604821956 is a wasteful number, since it uses less digits than its factorization.

425604821956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637133138 (or 637133136 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 425604821956 in words is "four hundred twenty-five billion, six hundred four million, eight hundred twenty-one thousand, nine hundred fifty-six".