25564741 has 4 divisors (see below), whose sum is σ = 25748800. Its totient is φ = 25380684.

The previous prime is 25564733. The next prime is 25564793. The reversal of 25564741 is 14746552.

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 a cyclic number.

It is not a de Polignac number, because 25564741 - 2³ = 25564733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25564697 and 25564706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25564711) 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, 91821 + ... + 92098.

It is an arithmetic number, because the mean of its divisors is an integer number (6437200).

Almost surely, 2^25564741 is an apocalyptic number.

It is an amenable number.

25564741 is a deficient number, since it is larger than the sum of its proper divisors (184059).

25564741 is a wasteful number, since it uses less digits than its factorization.

25564741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184058.

The product of its digits is 33600, while the sum is 34.

The square root of 25564741 is about 5056.1587198188. The cubic root of 25564741 is about 294.5871501544.

The spelling of 25564741 in words is "twenty-five million, five hundred sixty-four thousand, seven hundred forty-one".