25930391 has 2 divisors, whose sum is σ = 25930392. Its totient is φ = 25930390.

The previous prime is 25930381. The next prime is 25930397. The reversal of 25930391 is 19303952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25930391 - 2¹⁰ = 25929367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25930397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12965195 + 12965196.

It is an arithmetic number, because the mean of its divisors is an integer number (12965196).

Almost surely, 2^25930391 is an apocalyptic number.

25930391 is a deficient number, since it is larger than the sum of its proper divisors (1).

25930391 is an equidigital number, since it uses as much as digits as its factorization.

25930391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 25930391 is about 5092.1892148662. The cubic root of 25930391 is about 295.9849905647.

The spelling of 25930391 in words is "twenty-five million, nine hundred thirty thousand, three hundred ninety-one".