25436959 has 2 divisors, whose sum is σ = 25436960. Its totient is φ = 25436958.

The previous prime is 25436911. The next prime is 25436987. The reversal of 25436959 is 95963452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25436959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25436759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12718479 + 12718480.

It is an arithmetic number, because the mean of its divisors is an integer number (12718480).

Almost surely, 2^25436959 is an apocalyptic number.

25436959 is a deficient number, since it is larger than the sum of its proper divisors (1).

25436959 is an equidigital number, since it uses as much as digits as its factorization.

25436959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 43.

The square root of 25436959 is about 5043.5066174240. The cubic root of 25436959 is about 294.0955117200.

The spelling of 25436959 in words is "twenty-five million, four hundred thirty-six thousand, nine hundred fifty-nine".