7815675225 has 24 divisors (see below), whose sum is σ = 13237090272. Its totient is φ = 4066691200.

The previous prime is 7815675221. The next prime is 7815675293. The reversal of 7815675225 is 5225765187.

7815675225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7815675225 - 2² = 7815675221 is a prime.

It is a super-2 number, since 2×7815675225² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7815675221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267767 + ... + 1273916.

It is an arithmetic number, because the mean of its divisors is an integer number (551545428).

Almost surely, 2^7815675225 is an apocalyptic number.

7815675225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7815675225 is a deficient number, since it is larger than the sum of its proper divisors (5421415047).

7815675225 is a wasteful number, since it uses less digits than its factorization.

7815675225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541737 (or 2541732 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 48.

The square root of 7815675225 is about 88406.3076086769. The cubic root of 7815675225 is about 1984.5200975102.

The spelling of 7815675225 in words is "seven billion, eight hundred fifteen million, six hundred seventy-five thousand, two hundred twenty-five".