15725441 has 4 divisors (see below), whose sum is σ = 15940932. Its totient is φ = 15509952.

The previous prime is 15725393. The next prime is 15725443. The reversal of 15725441 is 14452751.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13535041 + 2190400 = 3679^2 + 1480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15725441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15725443) 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, 107636 + ... + 107781.

It is an arithmetic number, because the mean of its divisors is an integer number (3985233).

Almost surely, 2^15725441 is an apocalyptic number.

It is an amenable number.

15725441 is a deficient number, since it is larger than the sum of its proper divisors (215491).

15725441 is an equidigital number, since it uses as much as digits as its factorization.

15725441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215490.

The product of its digits is 5600, while the sum is 29.

The square root of 15725441 is about 3965.5316163158. The cubic root of 15725441 is about 250.5345415799.

The spelling of 15725441 in words is "fifteen million, seven hundred twenty-five thousand, four hundred forty-one".