25213787 has 2 divisors, whose sum is σ = 25213788. Its totient is φ = 25213786.

The previous prime is 25213763. The next prime is 25213831. The reversal of 25213787 is 78731252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25213787 - 2⁶ = 25213723 is a prime.

It is equal to p_1578446 and since 25213787 and 1578446 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25213717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606893 + 12606894.

It is an arithmetic number, because the mean of its divisors is an integer number (12606894).

Almost surely, 2^25213787 is an apocalyptic number.

25213787 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213787 is an equidigital number, since it uses as much as digits as its factorization.

25213787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 25213787 is about 5021.3331895026. Note that the first 3 decimals coincide. The cubic root of 25213787 is about 293.2328984958.

The spelling of 25213787 in words is "twenty-five million, two hundred thirteen thousand, seven hundred eighty-seven".