25044921 has 12 divisors (see below), whose sum is σ = 39464880. Its totient is φ = 15178680.

The previous prime is 25044889. The next prime is 25044941. The reversal of 25044921 is 12944052.

It is not a de Polignac number, because 25044921 - 2⁵ = 25044889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25044941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126391 + ... + 126588.

It is an arithmetic number, because the mean of its divisors is an integer number (3288740).

Almost surely, 2^25044921 is an apocalyptic number.

It is an amenable number.

25044921 is a deficient number, since it is larger than the sum of its proper divisors (14419959).

25044921 is a wasteful number, since it uses less digits than its factorization.

25044921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252996 (or 252993 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 25044921 is about 5004.4900839146. The cubic root of 25044921 is about 292.5768020983.

Adding to 25044921 its reverse (12944052), we get a palindrome (37988973).

The spelling of 25044921 in words is "twenty-five million, forty-four thousand, nine hundred twenty-one".