8015566025 has 12 divisors (see below), whose sum is σ = 9946311312. Its totient is φ = 6407930640.

The previous prime is 8015566021. The next prime is 8015566063. The reversal of 8015566025 is 5206655108.

It is not a de Polignac number, because 8015566025 - 2² = 8015566021 is a prime.

It is a super-2 number, since 2×8015566025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8015566025.

It is not an unprimeable number, because it can be changed into a prime (8015566021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76667 + ... + 148016.

It is an arithmetic number, because the mean of its divisors is an integer number (828859276).

Almost surely, 2^8015566025 is an apocalyptic number.

It is an amenable number.

8015566025 is a deficient number, since it is larger than the sum of its proper divisors (1930745287).

8015566025 is a wasteful number, since it uses less digits than its factorization.

8015566025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226120 (or 226115 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 8015566025 is about 89529.6935379542. The cubic root of 8015566025 is about 2001.2963283349.

The spelling of 8015566025 in words is "eight billion, fifteen million, five hundred sixty-six thousand, twenty-five".