71641625 has 16 divisors (see below), whose sum is σ = 97538688. Its totient is φ = 52102000.

The previous prime is 71641613. The next prime is 71641639. The reversal of 71641625 is 52614617.

It is not a de Polignac number, because 71641625 - 2⁶ = 71641561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71641591 and 71641600.

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, 24677 + ... + 27426.

It is an arithmetic number, because the mean of its divisors is an integer number (6096168).

Almost surely, 2^71641625 is an apocalyptic number.

It is an amenable number.

71641625 is a deficient number, since it is larger than the sum of its proper divisors (25897063).

71641625 is a wasteful number, since it uses less digits than its factorization.

71641625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52129 (or 52119 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 71641625 is about 8464.1375815850. The cubic root of 71641625 is about 415.3253847214.

The spelling of 71641625 in words is "seventy-one million, six hundred forty-one thousand, six hundred twenty-five".