25012503 has 8 divisors (see below), whose sum is σ = 37055600. Its totient is φ = 16674984.

The previous prime is 25012489. The next prime is 25012511. The reversal of 25012503 is 30521052.

It is a happy number.

It is not a de Polignac number, because 25012503 - 2⁹ = 25011991 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012543) 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, 463168 + ... + 463221.

It is an arithmetic number, because the mean of its divisors is an integer number (4631950).

Almost surely, 2^25012503 is an apocalyptic number.

25012503 is a deficient number, since it is larger than the sum of its proper divisors (12043097).

25012503 is an equidigital number, since it uses as much as digits as its factorization.

25012503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926398 (or 926392 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 25012503 is about 5001.2501437141. The cubic root of 25012503 is about 292.4505110224.

Adding to 25012503 its reverse (30521052), we get a palindrome (55533555).

The spelling of 25012503 in words is "twenty-five million, twelve thousand, five hundred three".