25190887 has 2 divisors, whose sum is σ = 25190888. Its totient is φ = 25190886.

The previous prime is 25190873. The next prime is 25190897. The reversal of 25190887 is 78809152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25190887 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25190897) 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, 12595443 + 12595444.

It is an arithmetic number, because the mean of its divisors is an integer number (12595444).

Almost surely, 2^25190887 is an apocalyptic number.

25190887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25190887 is an equidigital number, since it uses as much as digits as its factorization.

25190887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 25190887 is about 5019.0524006031. The cubic root of 25190887 is about 293.1440969823.

The spelling of 25190887 in words is "twenty-five million, one hundred ninety thousand, eight hundred eighty-seven".