71775725 has 24 divisors (see below), whose sum is σ = 105231360. Its totient is φ = 47517120.

The previous prime is 71775677. The next prime is 71775733. The reversal of 71775725 is 52757717.

It is not a de Polignac number, because 71775725 - 2¹⁰ = 71774701 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1997 + ... + 12146.

It is an arithmetic number, because the mean of its divisors is an integer number (4384640).

Almost surely, 2^71775725 is an apocalyptic number.

It is an amenable number.

71775725 is a deficient number, since it is larger than the sum of its proper divisors (33455635).

71775725 is a wasteful number, since it uses less digits than its factorization.

71775725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14189 (or 14184 counting only the distinct ones).

The product of its digits is 120050, while the sum is 41.

The square root of 71775725 is about 8472.0555357009. The cubic root of 71775725 is about 415.5843608860.

The spelling of 71775725 in words is "seventy-one million, seven hundred seventy-five thousand, seven hundred twenty-five".