8121055625 has 40 divisors (see below), whose sum is σ = 10639844160. Its totient is φ = 6184728000.

The previous prime is 8121055589. The next prime is 8121055627. The reversal of 8121055625 is 5265501218.

It is not a de Polignac number, because 8121055625 - 2¹² = 8121051529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8121055627) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3290642 + ... + 3293108.

It is an arithmetic number, because the mean of its divisors is an integer number (265996104).

Almost surely, 2^8121055625 is an apocalyptic number.

It is an amenable number.

8121055625 is a deficient number, since it is larger than the sum of its proper divisors (2518788535).

8121055625 is a wasteful number, since it uses less digits than its factorization.

8121055625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 8121055625 is about 90116.8997746816. The cubic root of 8121055625 is about 2010.0375086851.

The spelling of 8121055625 in words is "eight billion, one hundred twenty-one million, fifty-five thousand, six hundred twenty-five".