71216625 has 48 divisors (see below), whose sum is σ = 124225920. Its totient is φ = 36229600.

The previous prime is 71216623. The next prime is 71216627. The reversal of 71216625 is 52661217.

It is an interprime number because it is at equal distance from previous prime (71216623) and next prime (71216627).

It is not a de Polignac number, because 71216625 - 2¹ = 71216623 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71216592 and 71216601.

It is not an unprimeable number, because it can be changed into a prime (71216623) 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, 198196 + ... + 198554.

It is an arithmetic number, because the mean of its divisors is an integer number (2588040).

Almost surely, 2^71216625 is an apocalyptic number.

71216625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71216625 is a deficient number, since it is larger than the sum of its proper divisors (53009295).

71216625 is a wasteful number, since it uses less digits than its factorization.

71216625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 390 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 71216625 is about 8438.9943121204. The cubic root of 71216625 is about 414.5024763120.

The spelling of 71216625 in words is "seventy-one million, two hundred sixteen thousand, six hundred twenty-five".