8231521625874 has 48 divisors (see below), whose sum is σ = 18450298503000. Its totient is φ = 2649177070848.

The previous prime is 8231521625861. The next prime is 8231521625911. The reversal of 8231521625874 is 4785261251328.

It is a happy number.

8231521625874 is a `hidden beast` number, since 8 + 2 + 3 + 1 + 5 + 2 + 1 + 625 + 8 + 7 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7900557288849 + 330964337025 = 2810793^2 + 575295^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8231521625874.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38442412 + ... + 38655944.

Almost surely, 2^{8231521625874} is an apocalyptic number.

8231521625874 is an abundant number, since it is smaller than the sum of its proper divisors (10218776877126).

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

8231521625874 is a wasteful number, since it uses less digits than its factorization.

8231521625874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287419 (or 287416 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 8231521625874 in words is "eight trillion, two hundred thirty-one billion, five hundred twenty-one million, six hundred twenty-five thousand, eight hundred seventy-four".