25403369 has 2 divisors, whose sum is σ = 25403370. Its totient is φ = 25403368.

The previous prime is 25403363. The next prime is 25403401. The reversal of 25403369 is 96330452.

It is an a-pointer prime, because the next prime (25403401) can be obtained adding 25403369 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18705625 + 6697744 = 4325^2 + 2588^2 .

It is a cyclic number.

It is not a de Polignac number, because 25403369 - 2⁸ = 25403113 is a prime.

It is a super-2 number, since 2×25403369² = 1290662313100322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25403363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12701684 + 12701685.

It is an arithmetic number, because the mean of its divisors is an integer number (12701685).

Almost surely, 2^25403369 is an apocalyptic number.

It is an amenable number.

25403369 is a deficient number, since it is larger than the sum of its proper divisors (1).

25403369 is an equidigital number, since it uses as much as digits as its factorization.

25403369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 25403369 is about 5040.1754929764. The cubic root of 25403369 is about 293.9660017452.

The spelling of 25403369 in words is "twenty-five million, four hundred three thousand, three hundred sixty-nine".