25974913 has 2 divisors, whose sum is σ = 25974914. Its totient is φ = 25974912.

The previous prime is 25974911. The next prime is 25974937. The reversal of 25974913 is 31947952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25877569 + 97344 = 5087^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 25974913 - 2¹ = 25974911 is a prime.

It is a super-2 number, since 2×25974913² = 1349392210715138, which contains 22 as substring.

Together with 25974911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25974911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12987456 + 12987457.

It is an arithmetic number, because the mean of its divisors is an integer number (12987457).

Almost surely, 2^25974913 is an apocalyptic number.

It is an amenable number.

25974913 is a deficient number, since it is larger than the sum of its proper divisors (1).

25974913 is an equidigital number, since it uses as much as digits as its factorization.

25974913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 25974913 is about 5096.5589371653. The cubic root of 25974913 is about 296.1542939495.

The spelling of 25974913 in words is "twenty-five million, nine hundred seventy-four thousand, nine hundred thirteen".