25621941 has 16 divisors (see below), whose sum is σ = 36358848. Its totient is φ = 15993600.

The previous prime is 25621927. The next prime is 25621961. The reversal of 25621941 is 14912652.

It is not a de Polignac number, because 25621941 - 2¹⁵ = 25589173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25621899 and 25621908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25621901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9571 + ... + 11951.

It is an arithmetic number, because the mean of its divisors is an integer number (2272428).

Almost surely, 2^25621941 is an apocalyptic number.

It is an amenable number.

25621941 is a deficient number, since it is larger than the sum of its proper divisors (10736907).

25621941 is a wasteful number, since it uses less digits than its factorization.

25621941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its digits is 4320, while the sum is 30.

The square root of 25621941 is about 5061.8120273278. The cubic root of 25621941 is about 294.8066951552.

It can be divided in two parts, 25621 and 941, that added together give a palindrome (26562).

The spelling of 25621941 in words is "twenty-five million, six hundred twenty-one thousand, nine hundred forty-one".