25913911 has 2 divisors, whose sum is σ = 25913912. Its totient is φ = 25913910.

The previous prime is 25913851. The next prime is 25913941. The reversal of 25913911 is 11931952.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25913911 - 2⁹ = 25913399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25913941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956955 + 12956956.

It is an arithmetic number, because the mean of its divisors is an integer number (12956956).

Almost surely, 2^25913911 is an apocalyptic number.

25913911 is a deficient number, since it is larger than the sum of its proper divisors (1).

25913911 is an equidigital number, since it uses as much as digits as its factorization.

25913911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 31.

The square root of 25913911 is about 5090.5707931429. The cubic root of 25913911 is about 295.9222730842.

It can be divided in two parts, 25 and 913911, that added together give a square (913936 = 956²).

The spelling of 25913911 in words is "twenty-five million, nine hundred thirteen thousand, nine hundred eleven".