71488725 has 48 divisors (see below), whose sum is σ = 147371520. Its totient is φ = 29707200.

The previous prime is 71488721. The next prime is 71488751. The reversal of 71488725 is 52788417.

It is not a de Polignac number, because 71488725 - 2² = 71488721 is a prime.

It is a super-2 number, since 2×71488725² = 10221275604251250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71488721) 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, 415 + ... + 11964.

It is an arithmetic number, because the mean of its divisors is an integer number (3070240).

Almost surely, 2^71488725 is an apocalyptic number.

71488725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71488725 is an abundant number, since it is smaller than the sum of its proper divisors (75882795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71488725 is a wasteful number, since it uses less digits than its factorization.

71488725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12410 (or 12405 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 71488725 is about 8455.1005316318. The cubic root of 71488725 is about 415.0297070717.

The spelling of 71488725 in words is "seventy-one million, four hundred eighty-eight thousand, seven hundred twenty-five".