25414427 has 4 divisors (see below), whose sum is σ = 25845240. Its totient is φ = 24983616.

The previous prime is 25414421. The next prime is 25414429. The reversal of 25414427 is 72441452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25414427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25414427.

It is not an unprimeable number, because it can be changed into a prime (25414421) 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 3 ways as a sum of consecutive naturals, for example, 215318 + ... + 215435.

It is an arithmetic number, because the mean of its divisors is an integer number (6461310).

Almost surely, 2^25414427 is an apocalyptic number.

25414427 is a deficient number, since it is larger than the sum of its proper divisors (430813).

25414427 is an equidigital number, since it uses as much as digits as its factorization.

25414427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430812.

The product of its digits is 8960, while the sum is 29.

The square root of 25414427 is about 5041.2723592363. The cubic root of 25414427 is about 294.0086496908.

Adding to 25414427 its reverse (72441452), we get a palindrome (97855879).

The spelling of 25414427 in words is "twenty-five million, four hundred fourteen thousand, four hundred twenty-seven".