25231603 has 2 divisors, whose sum is σ = 25231604. Its totient is φ = 25231602.

The previous prime is 25231571. The next prime is 25231631. The reversal of 25231603 is 30613252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25231603 - 2⁵ = 25231571 is a prime.

It is not a weakly prime, because it can be changed into another prime (25231643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615801 + 12615802.

It is an arithmetic number, because the mean of its divisors is an integer number (12615802).

Almost surely, 2^25231603 is an apocalyptic number.

25231603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25231603 is an equidigital number, since it uses as much as digits as its factorization.

25231603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 25231603 is about 5023.1069070845. The cubic root of 25231603 is about 293.3019481170.

Adding to 25231603 its reverse (30613252), we get a palindrome (55844855).

The spelling of 25231603 in words is "twenty-five million, two hundred thirty-one thousand, six hundred three".