71230725 has 24 divisors (see below), whose sum is σ = 130854720. Its totient is φ = 37989360.

The previous prime is 71230721. The next prime is 71230729. The reversal of 71230725 is 52703217.

It is an interprime number because it is at equal distance from previous prime (71230721) and next prime (71230729).

It is not a de Polignac number, because 71230725 - 2² = 71230721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71230721) 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, 52089 + ... + 53438.

It is an arithmetic number, because the mean of its divisors is an integer number (5452280).

Almost surely, 2^71230725 is an apocalyptic number.

71230725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71230725 is a deficient number, since it is larger than the sum of its proper divisors (59623995).

71230725 is a wasteful number, since it uses less digits than its factorization.

71230725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105546 (or 105535 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 71230725 is about 8439.8296783762. The cubic root of 71230725 is about 414.5298299403.

The spelling of 71230725 in words is "seventy-one million, two hundred thirty thousand, seven hundred twenty-five".