71525880 has 96 divisors (see below), whose sum is σ = 244717200. Its totient is φ = 18067968.

The previous prime is 71525879. The next prime is 71525887. The reversal of 71525880 is 8852517.

71525880 is a `hidden beast` number, since 71 + 5 + 2 + 588 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71525887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1612 + ... + 12068.

Almost surely, 2^71525880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71525880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122358600).

71525880 is an abundant number, since it is smaller than the sum of its proper divisors (173191320).

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

71525880 is a wasteful number, since it uses less digits than its factorization.

71525880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10493 (or 10486 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 71525880 is about 8457.2974406722. The cubic root of 71525880 is about 415.1015960679.

The spelling of 71525880 in words is "seventy-one million, five hundred twenty-five thousand, eight hundred eighty".