25041021 has 4 divisors (see below), whose sum is σ = 33388032. Its totient is φ = 16694012.

The previous prime is 25041013. The next prime is 25041041. The reversal of 25041021 is 12014052.

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 25041021 - 2³ = 25041013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25041001) 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, 4173501 + ... + 4173506.

It is an arithmetic number, because the mean of its divisors is an integer number (8347008).

Almost surely, 2^25041021 is an apocalyptic number.

It is an amenable number.

25041021 is a deficient number, since it is larger than the sum of its proper divisors (8347011).

25041021 is an equidigital number, since it uses as much as digits as its factorization.

25041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347010.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 25041021 is about 5004.1004186567. The cubic root of 25041021 is about 292.5616146043.

Adding to 25041021 its reverse (12014052), we get a palindrome (37055073).

The spelling of 25041021 in words is "twenty-five million, forty-one thousand, twenty-one".