25542787 has 2 divisors, whose sum is σ = 25542788. Its totient is φ = 25542786.

The previous prime is 25542749. The next prime is 25542841. The reversal of 25542787 is 78724552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25542787 - 2¹⁵ = 25510019 is a prime.

It is not a weakly prime, because it can be changed into another prime (25545787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771393 + 12771394.

It is an arithmetic number, because the mean of its divisors is an integer number (12771394).

Almost surely, 2^25542787 is an apocalyptic number.

25542787 is a deficient number, since it is larger than the sum of its proper divisors (1).

25542787 is an equidigital number, since it uses as much as digits as its factorization.

25542787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156800, while the sum is 40.

The square root of 25542787 is about 5053.9872378153. The cubic root of 25542787 is about 294.5027993619.

The spelling of 25542787 in words is "twenty-five million, five hundred forty-two thousand, seven hundred eighty-seven".