25249603 has 4 divisors (see below), whose sum is σ = 25260480. Its totient is φ = 25238728.

The previous prime is 25249591. The next prime is 25249639. The reversal of 25249603 is 30694252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25249603 - 2¹⁷ = 25118531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25249703) 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, 400 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (6315120).

Almost surely, 2^25249603 is an apocalyptic number.

25249603 is a deficient number, since it is larger than the sum of its proper divisors (10877).

25249603 is an equidigital number, since it uses as much as digits as its factorization.

25249603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10876.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 25249603 is about 5024.8983074287. The cubic root of 25249603 is about 293.3716778673.

It can be divided in two parts, 25249 and 603, that added together give a palindrome (25852).

The spelling of 25249603 in words is "twenty-five million, two hundred forty-nine thousand, six hundred three".