25421103 has 12 divisors (see below), whose sum is σ = 38879568. Its totient is φ = 15950400.

The previous prime is 25421093. The next prime is 25421111. The reversal of 25421103 is 30112452.

It is not a de Polignac number, because 25421103 - 2⁸ = 25420847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25423103) 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, 82923 + ... + 83228.

It is an arithmetic number, because the mean of its divisors is an integer number (3239964).

Almost surely, 2^25421103 is an apocalyptic number.

25421103 is a deficient number, since it is larger than the sum of its proper divisors (13458465).

25421103 is a wasteful number, since it uses less digits than its factorization.

25421103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166174 (or 166171 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25421103 is about 5041.9344501887. The cubic root of 25421103 is about 294.0343913676.

Adding to 25421103 its reverse (30112452), we get a palindrome (55533555).

The spelling of 25421103 in words is "twenty-five million, four hundred twenty-one thousand, one hundred three".