75403725 has 48 divisors (see below), whose sum is σ = 129372672. Its totient is φ = 38727360.

The previous prime is 75403709. The next prime is 75403753. The reversal of 75403725 is 52730457.

It is not a de Polignac number, because 75403725 - 2⁴ = 75403709 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332062 + ... + 332288.

It is an arithmetic number, because the mean of its divisors is an integer number (2695264).

Almost surely, 2^75403725 is an apocalyptic number.

75403725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75403725 is a deficient number, since it is larger than the sum of its proper divisors (53968947).

75403725 is a wasteful number, since it uses less digits than its factorization.

75403725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 75403725 is about 8683.5318275457. The cubic root of 75403725 is about 422.4716785983.

The spelling of 75403725 in words is "seventy-five million, four hundred three thousand, seven hundred twenty-five".