25545719 has 2 divisors, whose sum is σ = 25545720. Its totient is φ = 25545718.

The previous prime is 25545703. The next prime is 25545721. The reversal of 25545719 is 91754552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25545719 - 2⁴ = 25545703 is a prime.

It is a super-2 number, since 2×25545719² = 1305167518453922, which contains 22 as substring.

Together with 25545721, 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 (25545739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772859 + 12772860.

It is an arithmetic number, because the mean of its divisors is an integer number (12772860).

Almost surely, 2^25545719 is an apocalyptic number.

25545719 is a deficient number, since it is larger than the sum of its proper divisors (1).

25545719 is an equidigital number, since it uses as much as digits as its factorization.

25545719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 38.

The square root of 25545719 is about 5054.2772974976. The cubic root of 25545719 is about 294.5140673723.

The spelling of 25545719 in words is "twenty-five million, five hundred forty-five thousand, seven hundred nineteen".