25579387 has 2 divisors, whose sum is σ = 25579388. Its totient is φ = 25579386.

The previous prime is 25579369. The next prime is 25579397. The reversal of 25579387 is 78397552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25579387 - 2⁷ = 25579259 is a prime.

It is not a weakly prime, because it can be changed into another prime (25579397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789693 + 12789694.

It is an arithmetic number, because the mean of its divisors is an integer number (12789694).

Almost surely, 2^25579387 is an apocalyptic number.

25579387 is a deficient number, since it is larger than the sum of its proper divisors (1).

25579387 is an equidigital number, since it uses as much as digits as its factorization.

25579387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 46.

The square root of 25579387 is about 5057.6068451393. The cubic root of 25579387 is about 294.6433955868.

The spelling of 25579387 in words is "twenty-five million, five hundred seventy-nine thousand, three hundred eighty-seven".