71257625 has 16 divisors (see below), whose sum is σ = 94163472. Its totient is φ = 53651200.

The previous prime is 71257607. The next prime is 71257633. The reversal of 71257625 is 52675217.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6310144 + 64947481 = 2512^2 + 8059^2 .

It is not a de Polignac number, because 71257625 - 2⁸ = 71257369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14642 + ... + 18891.

It is an arithmetic number, because the mean of its divisors is an integer number (5885217).

Almost surely, 2^71257625 is an apocalyptic number.

It is an amenable number.

71257625 is a deficient number, since it is larger than the sum of its proper divisors (22905847).

71257625 is a wasteful number, since it uses less digits than its factorization.

71257625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33565 (or 33555 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 71257625 is about 8441.4231620030. The cubic root of 71257625 is about 414.5820052201.

The spelling of 71257625 in words is "seventy-one million, two hundred fifty-seven thousand, six hundred twenty-five".