25240503 has 8 divisors (see below), whose sum is σ = 33720448. Its totient is φ = 16793784.

The previous prime is 25240483. The next prime is 25240513. The reversal of 25240503 is 30504252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25240503 - 2¹⁰ = 25239479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25240503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25240513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6475 + ... + 9612.

It is an arithmetic number, because the mean of its divisors is an integer number (4215056).

Almost surely, 2^25240503 is an apocalyptic number.

25240503 is a deficient number, since it is larger than the sum of its proper divisors (8479945).

25240503 is a wasteful number, since it uses less digits than its factorization.

25240503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16613.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 25240503 is about 5023.9927348674. The cubic root of 25240503 is about 293.3364297481.

Adding to 25240503 its reverse (30504252), we get a palindrome (55744755).

It can be divided in two parts, 252 and 40503, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 25240503 in words is "twenty-five million, two hundred forty thousand, five hundred three".