425664523415982 has 16 divisors (see below), whose sum is σ = 853700436938880. Its totient is φ = 141492942787512.

The previous prime is 425664523415981. The next prime is 425664523416029. The reversal of 425664523415982 is 289514325466524.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425664523415981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98807918788 + ... + 98807923095.

It is an arithmetic number, because the mean of its divisors is an integer number (53356277308680).

Almost surely, 2^{425664523415982} is an apocalyptic number.

425664523415982 is an abundant number, since it is smaller than the sum of its proper divisors (428035913522898).

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

425664523415982 is a wasteful number, since it uses less digits than its factorization.

425664523415982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197615842247.

The product of its digits is 497664000, while the sum is 66.

The spelling of 425664523415982 in words is "four hundred twenty-five trillion, six hundred sixty-four billion, five hundred twenty-three million, four hundred fifteen thousand, nine hundred eighty-two".