71947625 has 8 divisors (see below), whose sum is σ = 89790792. Its totient is φ = 57558000.

The previous prime is 71947619. The next prime is 71947627. The reversal of 71947625 is 52674917.

It can be written as a sum of positive squares in 4 ways, for example, as 2408704 + 69538921 = 1552^2 + 8339^2 .

It is not a de Polignac number, because 71947625 - 2¹⁴ = 71931241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71947627) by changing a digit.

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, 287666 + ... + 287915.

It is an arithmetic number, because the mean of its divisors is an integer number (11223849).

Almost surely, 2^71947625 is an apocalyptic number.

It is an amenable number.

71947625 is a deficient number, since it is larger than the sum of its proper divisors (17843167).

71947625 is an equidigital number, since it uses as much as digits as its factorization.

71947625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575596 (or 575586 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 71947625 is about 8482.1945863084. The cubic root of 71947625 is about 415.9158657054.

The spelling of 71947625 in words is "seventy-one million, nine hundred forty-seven thousand, six hundred twenty-five".