75681725 has 18 divisors (see below), whose sum is σ = 109168794. Its totient is φ = 51895200.

The previous prime is 75681701. The next prime is 75681803. The reversal of 75681725 is 52718657.

It can be written as a sum of positive squares in 3 ways, for example, as 582169 + 75099556 = 763^2 + 8666^2 .

It is not a de Polignac number, because 75681725 - 2¹⁰ = 75680701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29666 + ... + 32115.

It is an arithmetic number, because the mean of its divisors is an integer number (6064933).

Almost surely, 2^75681725 is an apocalyptic number.

It is an amenable number.

75681725 is a deficient number, since it is larger than the sum of its proper divisors (33487069).

75681725 is a wasteful number, since it uses less digits than its factorization.

75681725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61805 (or 61793 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 75681725 is about 8699.5244122883. The cubic root of 75681725 is about 422.9902342623.

The spelling of 75681725 in words is "seventy-five million, six hundred eighty-one thousand, seven hundred twenty-five".