8731625 has 32 divisors (see below), whose sum is σ = 13208832. Its totient is φ = 5625600.

The previous prime is 8731609. The next prime is 8731627. The reversal of 8731625 is 5261378.

It is a happy number.

It is not a de Polignac number, because 8731625 - 2⁴ = 8731609 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8731591 and 8731600.

It is not an unprimeable number, because it can be changed into a prime (8731627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14582 + ... + 15168.

It is an arithmetic number, because the mean of its divisors is an integer number (412776).

Almost surely, 2^8731625 is an apocalyptic number.

8731625 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8731625 is a deficient number, since it is larger than the sum of its proper divisors (4477207).

8731625 is a wasteful number, since it uses less digits than its factorization.

8731625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 616 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 8731625 is about 2954.9323173298. The cubic root of 8731625 is about 205.9199189155.

The spelling of 8731625 in words is "eight million, seven hundred thirty-one thousand, six hundred twenty-five".