71526725 has 12 divisors (see below), whose sum is σ = 89071680. Its totient is φ = 56977200.

The previous prime is 71526713. The next prime is 71526727. The reversal of 71526725 is 52762517.

It is a happy number.

It is not a de Polignac number, because 71526725 - 2¹² = 71522629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71526727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11 + ... + 11960.

It is an arithmetic number, because the mean of its divisors is an integer number (7422640).

Almost surely, 2^71526725 is an apocalyptic number.

It is an amenable number.

71526725 is a deficient number, since it is larger than the sum of its proper divisors (17544955).

71526725 is a wasteful number, since it uses less digits than its factorization.

71526725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12220 (or 12215 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 71526725 is about 8457.3473973818. The cubic root of 71526725 is about 415.1032307185.

The spelling of 71526725 in words is "seventy-one million, five hundred twenty-six thousand, seven hundred twenty-five".