25216903 has 2 divisors, whose sum is σ = 25216904. Its totient is φ = 25216902.

The previous prime is 25216871. The next prime is 25216907. The reversal of 25216903 is 30961252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25216903 - 2⁵ = 25216871 is a prime.

It is a super-2 number, since 2×25216903² = 1271784393822818, which contains 22 as substring.

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

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25216907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12608451 + 12608452.

It is an arithmetic number, because the mean of its divisors is an integer number (12608452).

Almost surely, 2^25216903 is an apocalyptic number.

25216903 is a deficient number, since it is larger than the sum of its proper divisors (1).

25216903 is an equidigital number, since it uses as much as digits as its factorization.

25216903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 25216903 is about 5021.6434560809. The cubic root of 25216903 is about 293.2449775497.

The spelling of 25216903 in words is "twenty-five million, two hundred sixteen thousand, nine hundred three".