71369725 has 60 divisors (see below), whose sum is σ = 109407060. Its totient is φ = 46099200.

The previous prime is 71369693. The next prime is 71369729. The reversal of 71369725 is 52796317.

It can be written as a sum of positive squares in 6 ways, for example, as 11431161 + 59938564 = 3381^2 + 7742^2 .

It is not a de Polignac number, because 71369725 - 2⁵ = 71369693 is a prime.

Its product of digits (79380) is a multiple of the sum of its prime factors (108).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71369729) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1740705 + ... + 1740745.

It is an arithmetic number, because the mean of its divisors is an integer number (1823451).

Almost surely, 2^71369725 is an apocalyptic number.

It is an amenable number.

71369725 is a deficient number, since it is larger than the sum of its proper divisors (38037335).

71369725 is an equidigital number, since it uses as much as digits as its factorization.

71369725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 82 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 71369725 is about 8448.0604282877. The cubic root of 71369725 is about 414.7992932801.

It can be divided in two parts, 7136 and 9725, that added together give a palindrome (16861).

The spelling of 71369725 in words is "seventy-one million, three hundred sixty-nine thousand, seven hundred twenty-five".