71725387 has 4 divisors (see below), whose sum is σ = 71841880. Its totient is φ = 71608896.

The previous prime is 71725373. The next prime is 71725393. The reversal of 71725387 is 78352717.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71725387 - 2¹⁵ = 71692619 is a prime.

It is a super-2 number, since 2×71725387² = 10289062280599538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71725307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57318 + ... + 58555.

It is an arithmetic number, because the mean of its divisors is an integer number (17960470).

Almost surely, 2^71725387 is an apocalyptic number.

71725387 is a deficient number, since it is larger than the sum of its proper divisors (116493).

71725387 is a wasteful number, since it uses less digits than its factorization.

71725387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116492.

The product of its digits is 82320, while the sum is 40.

The square root of 71725387 is about 8469.0841889782. The cubic root of 71725387 is about 415.4871851443.

The spelling of 71725387 in words is "seventy-one million, seven hundred twenty-five thousand, three hundred eighty-seven".