25579903 has 2 divisors, whose sum is σ = 25579904. Its totient is φ = 25579902.

The previous prime is 25579843. The next prime is 25579907. The reversal of 25579903 is 30997552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25579903 - 2¹⁷ = 25448831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25579907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789951 + 12789952.

It is an arithmetic number, because the mean of its divisors is an integer number (12789952).

Almost surely, 2^25579903 is an apocalyptic number.

25579903 is a deficient number, since it is larger than the sum of its proper divisors (1).

25579903 is an equidigital number, since it uses as much as digits as its factorization.

25579903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 25579903 is about 5057.6578571509. The cubic root of 25579903 is about 294.6453768040.

The spelling of 25579903 in words is "twenty-five million, five hundred seventy-nine thousand, nine hundred three".