7810915225 has 24 divisors (see below), whose sum is σ = 9732636000. Its totient is φ = 6218432640.

The previous prime is 7810915223. The next prime is 7810915241. The reversal of 7810915225 is 5225190187.

It is not a de Polignac number, because 7810915225 - 2¹ = 7810915223 is a prime.

It is a super-2 number, since 2×7810915225² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7810915223) 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, 7664766 + ... + 7665784.

It is an arithmetic number, because the mean of its divisors is an integer number (405526500).

Almost surely, 2^7810915225 is an apocalyptic number.

It is an amenable number.

7810915225 is a deficient number, since it is larger than the sum of its proper divisors (1921720775).

7810915225 is a wasteful number, since it uses less digits than its factorization.

7810915225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 7810915225 is about 88379.3823524469. The cubic root of 7810915225 is about 1984.1171366336.

The spelling of 7810915225 in words is "seven billion, eight hundred ten million, nine hundred fifteen thousand, two hundred twenty-five".