8538225725 has 6 divisors (see below), whose sum is σ = 10587399930. Its totient is φ = 6830580560.

The previous prime is 8538225721. The next prime is 8538225737. The reversal of 8538225725 is 5275228358.

It can be written as a sum of positive squares in 3 ways, for example, as 2800314724 + 5737911001 = 52918^2 + 75749^2 .

It is not a de Polignac number, because 8538225725 - 2² = 8538225721 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8538225725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538225721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170764490 + ... + 170764539.

It is an arithmetic number, because the mean of its divisors is an integer number (1764566655).

Almost surely, 2^8538225725 is an apocalyptic number.

It is an amenable number.

8538225725 is a deficient number, since it is larger than the sum of its proper divisors (2049174205).

8538225725 is a wasteful number, since it uses less digits than its factorization.

8538225725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341529039 (or 341529034 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 47.

The square root of 8538225725 is about 92402.5201225594. The cubic root of 8538225725 is about 2043.8822748854.

The spelling of 8538225725 in words is "eight billion, five hundred thirty-eight million, two hundred twenty-five thousand, seven hundred twenty-five".