75621625 has 8 divisors (see below), whose sum is σ = 94375944. Its totient is φ = 60497200.

The previous prime is 75621613. The next prime is 75621641. The reversal of 75621625 is 52612657.

It can be written as a sum of positive squares in 4 ways, for example, as 15155449 + 60466176 = 3893^2 + 7776^2 .

It is a de Polignac number, because none of the positive numbers 2^k-75621625 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 302362 + ... + 302611.

It is an arithmetic number, because the mean of its divisors is an integer number (11796993).

Almost surely, 2^75621625 is an apocalyptic number.

It is an amenable number.

75621625 is a deficient number, since it is larger than the sum of its proper divisors (18754319).

75621625 is an equidigital number, since it uses as much as digits as its factorization.

75621625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604988 (or 604978 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 75621625 is about 8696.0695144416. The cubic root of 75621625 is about 422.8782369679.

The spelling of 75621625 in words is "seventy-five million, six hundred twenty-one thousand, six hundred twenty-five".