25290787 has 2 divisors, whose sum is σ = 25290788. Its totient is φ = 25290786.

The previous prime is 25290773. The next prime is 25290799. The reversal of 25290787 is 78709252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25290787 - 2¹⁹ = 24766499 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (25290737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12645393 + 12645394.

It is an arithmetic number, because the mean of its divisors is an integer number (12645394).

Almost surely, 2^25290787 is an apocalyptic number.

25290787 is a deficient number, since it is larger than the sum of its proper divisors (1).

25290787 is an equidigital number, since it uses as much as digits as its factorization.

25290787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 25290787 is about 5028.9946311365. The cubic root of 25290787 is about 293.5310949761.

The spelling of 25290787 in words is "twenty-five million, two hundred ninety thousand, seven hundred eighty-seven".