25273979 has 2 divisors, whose sum is σ = 25273980. Its totient is φ = 25273978.

The previous prime is 25273973. The next prime is 25273991. The reversal of 25273979 is 97937252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25273979 - 2¹² = 25269883 is a prime.

It is not a weakly prime, because it can be changed into another prime (25273973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12636989 + 12636990.

It is an arithmetic number, because the mean of its divisors is an integer number (12636990).

Almost surely, 2^25273979 is an apocalyptic number.

25273979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25273979 is an equidigital number, since it uses as much as digits as its factorization.

25273979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 44.

The square root of 25273979 is about 5027.3232440335. The cubic root of 25273979 is about 293.4660546381.

The spelling of 25273979 in words is "twenty-five million, two hundred seventy-three thousand, nine hundred seventy-nine".