71825481 has 128 divisors (see below), whose sum is σ = 144506880. Its totient is φ = 34214400.

The previous prime is 71825477. The next prime is 71825513. The reversal of 71825481 is 18452817.

It is not a de Polignac number, because 71825481 - 2² = 71825477 is a prime.

It is a super-2 number, since 2×71825481² = 10317799441762722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71825381) 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 127 ways as a sum of consecutive naturals, for example, 1751821 + ... + 1751861.

It is an arithmetic number, because the mean of its divisors is an integer number (1128960).

Almost surely, 2^71825481 is an apocalyptic number.

It is an amenable number.

71825481 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

71825481 is a wasteful number, since it uses less digits than its factorization.

71825481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 118 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 71825481 is about 8474.9915044205. The cubic root of 71825481 is about 415.6803684580.

The spelling of 71825481 in words is "seventy-one million, eight hundred twenty-five thousand, four hundred eighty-one".