25965403 has 2 divisors, whose sum is σ = 25965404. Its totient is φ = 25965402.

The previous prime is 25965391. The next prime is 25965427. The reversal of 25965403 is 30456952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25965403 - 2⁵ = 25965371 is a prime.

It is not a weakly prime, because it can be changed into another prime (25905403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12982701 + 12982702.

It is an arithmetic number, because the mean of its divisors is an integer number (12982702).

Almost surely, 2^25965403 is an apocalyptic number.

25965403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25965403 is an equidigital number, since it uses as much as digits as its factorization.

25965403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 25965403 is about 5095.6258693118. The cubic root of 25965403 is about 296.1181466212.

The spelling of 25965403 in words is "twenty-five million, nine hundred sixty-five thousand, four hundred three".