25105279 has 2 divisors, whose sum is σ = 25105280. Its totient is φ = 25105278.

The previous prime is 25105273. The next prime is 25105291. The reversal of 25105279 is 97250152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25105279 - 2⁷ = 25105151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25105279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25105273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12552639 + 12552640.

It is an arithmetic number, because the mean of its divisors is an integer number (12552640).

Almost surely, 2^25105279 is an apocalyptic number.

25105279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25105279 is an equidigital number, since it uses as much as digits as its factorization.

25105279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25105279 is about 5010.5168396085. The cubic root of 25105279 is about 292.8116492262.

The spelling of 25105279 in words is "twenty-five million, one hundred five thousand, two hundred seventy-nine".