75420325 has 12 divisors (see below), whose sum is σ = 95287428. Its totient is φ = 59196800.

The previous prime is 75420311. The next prime is 75420343. The reversal of 75420325 is 52302457.

It can be written as a sum of positive squares in 6 ways, for example, as 3526884 + 71893441 = 1878^2 + 8479^2 .

It is a de Polignac number, because none of the positive numbers 2^k-75420325 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75420293 and 75420302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27136 + ... + 29785.

It is an arithmetic number, because the mean of its divisors is an integer number (7940619).

Almost surely, 2^75420325 is an apocalyptic number.

It is an amenable number.

75420325 is a deficient number, since it is larger than the sum of its proper divisors (19867103).

75420325 is a wasteful number, since it uses less digits than its factorization.

75420325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56984 (or 56979 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 75420325 is about 8684.4876072224. The cubic root of 75420325 is about 422.5026784607.

The spelling of 75420325 in words is "seventy-five million, four hundred twenty thousand, three hundred twenty-five".