25253503 has 4 divisors (see below), whose sum is σ = 27549288. Its totient is φ = 22957720.

The previous prime is 25253479. The next prime is 25253509. The reversal of 25253503 is 30535252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25253503 - 2⁹ = 25252991 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 (25253509) 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, 1147876 + ... + 1147897.

It is an arithmetic number, because the mean of its divisors is an integer number (6887322).

Almost surely, 2^25253503 is an apocalyptic number.

25253503 is a deficient number, since it is larger than the sum of its proper divisors (2295785).

25253503 is a wasteful number, since it uses less digits than its factorization.

25253503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295784.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 25253503 is about 5025.2863599998. The cubic root of 25253503 is about 293.3867816116.

Adding to 25253503 its reverse (30535252), we get a palindrome (55788755).

The spelling of 25253503 in words is "twenty-five million, two hundred fifty-three thousand, five hundred three".