25214387 has 16 divisors (see below), whose sum is σ = 29137920. Its totient is φ = 21578400.

The previous prime is 25214381. The next prime is 25214393. The reversal of 25214387 is 78341252.

It is an interprime number because it is at equal distance from previous prime (25214381) and next prime (25214393).

It is a cyclic number.

It is not a de Polignac number, because 25214387 - 2²⁰ = 24165811 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25214381) 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 in 15 ways as a sum of consecutive naturals, for example, 46337 + ... + 46877.

It is an arithmetic number, because the mean of its divisors is an integer number (1821120).

Almost surely, 2^25214387 is an apocalyptic number.

25214387 is a deficient number, since it is larger than the sum of its proper divisors (3923533).

25214387 is a wasteful number, since it uses less digits than its factorization.

25214387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 13440, while the sum is 32.

The square root of 25214387 is about 5021.3929342365. The cubic root of 25214387 is about 293.2352244501.

It can be divided in two parts, 25 and 214387, that added together give a palindrome (214412).

The spelling of 25214387 in words is "twenty-five million, two hundred fourteen thousand, three hundred eighty-seven".