25342787 has 2 divisors, whose sum is σ = 25342788. Its totient is φ = 25342786.

The previous prime is 25342777. The next prime is 25342829. The reversal of 25342787 is 78724352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25342787 - 2⁴ = 25342771 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25342787.

It is not a weakly prime, because it can be changed into another prime (25342747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671393 + 12671394.

It is an arithmetic number, because the mean of its divisors is an integer number (12671394).

Almost surely, 2^25342787 is an apocalyptic number.

25342787 is a deficient number, since it is larger than the sum of its proper divisors (1).

25342787 is an equidigital number, since it uses as much as digits as its factorization.

25342787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 25342787 is about 5034.1619958043. The cubic root of 25342787 is about 293.7321321862.

It can be divided in two parts, 2534278 and 7, that multiplied together give a triangular number (17739946 = T₅₉₅₆).

The spelling of 25342787 in words is "twenty-five million, three hundred forty-two thousand, seven hundred eighty-seven".