71825715 has 48 divisors (see below), whose sum is σ = 136412640. Its totient is φ = 34744320.

The previous prime is 71825713. The next prime is 71825723. The reversal of 71825715 is 51752817.

71825715 is a `hidden beast` number, since 7 + 1 + 82 + 571 + 5 = 666.

It is not a de Polignac number, because 71825715 - 2¹ = 71825713 is a prime.

It is a super-2 number, since 2×71825715² = 10317866670522450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71825715.

It is not an unprimeable number, because it can be changed into a prime (71825713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33475 + ... + 35555.

It is an arithmetic number, because the mean of its divisors is an integer number (2841930).

Almost surely, 2^71825715 is an apocalyptic number.

71825715 is a deficient number, since it is larger than the sum of its proper divisors (64586925).

71825715 is a wasteful number, since it uses less digits than its factorization.

71825715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164 (or 2161 counting only the distinct ones).

The product of its digits is 19600, while the sum is 36.

The square root of 71825715 is about 8475.0053097328. The cubic root of 71825715 is about 415.6808198720.

The spelling of 71825715 in words is "seventy-one million, eight hundred twenty-five thousand, seven hundred fifteen".