71651625 has 16 divisors (see below), whose sum is σ = 119228928. Its totient is φ = 38214000.

The previous prime is 71651623. The next prime is 71651627. The reversal of 71651625 is 52615617.

It is an interprime number because it is at equal distance from previous prime (71651623) and next prime (71651627).

It is not a de Polignac number, because 71651625 - 2¹ = 71651623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71651623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95161 + ... + 95910.

It is an arithmetic number, because the mean of its divisors is an integer number (7451808).

Almost surely, 2^71651625 is an apocalyptic number.

71651625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71651625 is a deficient number, since it is larger than the sum of its proper divisors (47577303).

71651625 is a wasteful number, since it uses less digits than its factorization.

71651625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191089 (or 191079 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 71651625 is about 8464.7282886103. The cubic root of 71651625 is about 415.3447080343.

The spelling of 71651625 in words is "seventy-one million, six hundred fifty-one thousand, six hundred twenty-five".