71143925 has 12 divisors (see below), whose sum is σ = 88643136. Its totient is φ = 56641200.

The previous prime is 71143921. The next prime is 71143937. The reversal of 71143925 is 52934117.

It is not a de Polignac number, because 71143925 - 2² = 71143921 is a prime.

It is a super-2 number, since 2×71143925² = 10122916128811250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71143891 and 71143900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71143921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1469 + ... + 12018.

It is an arithmetic number, because the mean of its divisors is an integer number (7386928).

Almost surely, 2^71143925 is an apocalyptic number.

It is an amenable number.

71143925 is a deficient number, since it is larger than the sum of its proper divisors (17499211).

71143925 is a wasteful number, since it uses less digits than its factorization.

71143925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13708 (or 13703 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 71143925 is about 8434.6858269885. The cubic root of 71143925 is about 414.3613829000.

The spelling of 71143925 in words is "seventy-one million, one hundred forty-three thousand, nine hundred twenty-five".