25105579 has 2 divisors, whose sum is σ = 25105580. Its totient is φ = 25105578.

The previous prime is 25105547. The next prime is 25105589. The reversal of 25105579 is 97550152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25105579 - 2⁵ = 25105547 is a prime.

It is not a weakly prime, because it can be changed into another prime (25105589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12552789 + 12552790.

It is an arithmetic number, because the mean of its divisors is an integer number (12552790).

Almost surely, 2^25105579 is an apocalyptic number.

25105579 is a deficient number, since it is larger than the sum of its proper divisors (1).

25105579 is an equidigital number, since it uses as much as digits as its factorization.

25105579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 25105579 is about 5010.5467765504. The cubic root of 25105579 is about 292.8128155565.

The spelling of 25105579 in words is "twenty-five million, one hundred five thousand, five hundred seventy-nine".