25724541 has 4 divisors (see below), whose sum is σ = 34299392. Its totient is φ = 17149692.

The previous prime is 25724539. The next prime is 25724549. The reversal of 25724541 is 14542752.

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.

It is not a de Polignac number, because 25724541 - 2¹ = 25724539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25724499 and 25724508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25724549) 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, 4287421 + ... + 4287426.

It is an arithmetic number, because the mean of its divisors is an integer number (8574848).

Almost surely, 2^25724541 is an apocalyptic number.

It is an amenable number.

25724541 is a deficient number, since it is larger than the sum of its proper divisors (8574851).

25724541 is an equidigital number, since it uses as much as digits as its factorization.

25724541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8574850.

The product of its digits is 11200, while the sum is 30.

The square root of 25724541 is about 5071.9366123799. The cubic root of 25724541 is about 295.1996771282.

The spelling of 25724541 in words is "twenty-five million, seven hundred twenty-four thousand, five hundred forty-one".