71825573 has 4 divisors (see below), whose sum is σ = 74948448. Its totient is φ = 68702700.

The previous prime is 71825557. The next prime is 71825591. The reversal of 71825573 is 37552817.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37552817 = 37 ⋅1014941.

It is a cyclic number.

It is not a de Polignac number, because 71825573 - 2⁴ = 71825557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71825513) 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, 1561403 + ... + 1561448.

It is an arithmetic number, because the mean of its divisors is an integer number (18737112).

Almost surely, 2^71825573 is an apocalyptic number.

It is an amenable number.

71825573 is a deficient number, since it is larger than the sum of its proper divisors (3122875).

71825573 is a wasteful number, since it uses less digits than its factorization.

71825573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122874.

The product of its digits is 58800, while the sum is 38.

The square root of 71825573 is about 8474.9969321528. The cubic root of 71825573 is about 415.6805459371.

The spelling of 71825573 in words is "seventy-one million, eight hundred twenty-five thousand, five hundred seventy-three".