25531103 has 16 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 22952160.

The previous prime is 25531063. The next prime is 25531111. The reversal of 25531103 is 30113552.

It is a cyclic number.

It is not a de Polignac number, because 25531103 - 2⁶ = 25531039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531153) 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, 128198 + ... + 128396.

It is an arithmetic number, because the mean of its divisors is an integer number (1764000).

Almost surely, 2^25531103 is an apocalyptic number.

25531103 is a deficient number, since it is larger than the sum of its proper divisors (2692897).

25531103 is a wasteful number, since it uses less digits than its factorization.

25531103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 25531103 is about 5052.8311865725. The cubic root of 25531103 is about 294.4578878505.

Adding to 25531103 its reverse (30113552), we get a palindrome (55644655).

The spelling of 25531103 in words is "twenty-five million, five hundred thirty-one thousand, one hundred three".