25775207 has 2 divisors, whose sum is σ = 25775208. Its totient is φ = 25775206.

The previous prime is 25775173. The next prime is 25775209. The reversal of 25775207 is 70257752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25775207 - 2⁶ = 25775143 is a prime.

It is a super-2 number, since 2×25775207² = 1328722591785698, which contains 22 as substring.

Together with 25775209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25775209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12887603 + 12887604.

It is an arithmetic number, because the mean of its divisors is an integer number (12887604).

Almost surely, 2^25775207 is an apocalyptic number.

25775207 is a deficient number, since it is larger than the sum of its proper divisors (1).

25775207 is an equidigital number, since it uses as much as digits as its factorization.

25775207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 25775207 is about 5076.9288945188. The cubic root of 25775207 is about 295.3933544197.

The spelling of 25775207 in words is "twenty-five million, seven hundred seventy-five thousand, two hundred seven".