8421626625 has 32 divisors (see below), whose sum is σ = 14465657856. Its totient is φ = 4346640000.

The previous prime is 8421626611. The next prime is 8421626639. The reversal of 8421626625 is 5266261248.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8421626611) and next prime (8421626639).

It is not a de Polignac number, because 8421626625 - 2¹⁰ = 8421625601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350596 + ... + 373845.

It is an arithmetic number, because the mean of its divisors is an integer number (452051808).

Almost surely, 2^8421626625 is an apocalyptic number.

It is an amenable number.

8421626625 is a deficient number, since it is larger than the sum of its proper divisors (6044031231).

8421626625 is a wasteful number, since it uses less digits than its factorization.

8421626625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724490 (or 724480 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 8421626625 is about 91769.4209690788. The cubic root of 8421626625 is about 2034.5357600998.

The spelling of 8421626625 in words is "eight billion, four hundred twenty-one million, six hundred twenty-six thousand, six hundred twenty-five".