25397923 has 2 divisors, whose sum is σ = 25397924. Its totient is φ = 25397922.

The previous prime is 25397921. The next prime is 25397951. The reversal of 25397923 is 32979352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25397923 - 2¹ = 25397921 is a prime.

Together with 25397921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25397921) 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, 12698961 + 12698962.

It is an arithmetic number, because the mean of its divisors is an integer number (12698962).

Almost surely, 2^25397923 is an apocalyptic number.

25397923 is a deficient number, since it is larger than the sum of its proper divisors (1).

25397923 is an equidigital number, since it uses as much as digits as its factorization.

25397923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 25397923 is about 5039.6352050520. The cubic root of 25397923 is about 293.9449933341.

The spelling of 25397923 in words is "twenty-five million, three hundred ninety-seven thousand, nine hundred twenty-three".