25030503 has 12 divisors (see below), whose sum is σ = 36221640. Its totient is φ = 16656336.

The previous prime is 25030493. The next prime is 25030507. The reversal of 25030503 is 30503052.

It is not a de Polignac number, because 25030503 - 2⁴ = 25030487 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25030507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3325 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (3018470).

Almost surely, 2^25030503 is an apocalyptic number.

25030503 is a deficient number, since it is larger than the sum of its proper divisors (11191137).

25030503 is a wasteful number, since it uses less digits than its factorization.

25030503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118 (or 5115 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 25030503 is about 5003.0493701342. The cubic root of 25030503 is about 292.5206472385.

Adding to 25030503 its reverse (30503052), we get a palindrome (55533555).

The spelling of 25030503 in words is "twenty-five million, thirty thousand, five hundred three".