25953491 has 2 divisors, whose sum is σ = 25953492. Its totient is φ = 25953490.

The previous prime is 25953469. The next prime is 25953493. The reversal of 25953491 is 19435952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25953491 is a prime.

It is a Sophie Germain prime.

Together with 25953493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25953493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12976745 + 12976746.

It is an arithmetic number, because the mean of its divisors is an integer number (12976746).

Almost surely, 2^25953491 is an apocalyptic number.

25953491 is a deficient number, since it is larger than the sum of its proper divisors (1).

25953491 is an equidigital number, since it uses as much as digits as its factorization.

25953491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 38.

The square root of 25953491 is about 5094.4568896007. The cubic root of 25953491 is about 296.0728568831.

The spelling of 25953491 in words is "twenty-five million, nine hundred fifty-three thousand, four hundred ninety-one".