25116427 has 4 divisors (see below), whose sum is σ = 28704496. Its totient is φ = 21528360.

The previous prime is 25116419. The next prime is 25116433. The reversal of 25116427 is 72461152.

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

It is not a de Polignac number, because 25116427 - 2³ = 25116419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25116395 and 25116404.

It is not an unprimeable number, because it can be changed into a prime (25116457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1794024 + ... + 1794037.

It is an arithmetic number, because the mean of its divisors is an integer number (7176124).

Almost surely, 2^25116427 is an apocalyptic number.

25116427 is a deficient number, since it is larger than the sum of its proper divisors (3588069).

25116427 is an equidigital number, since it uses as much as digits as its factorization.

25116427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588068.

The product of its digits is 3360, while the sum is 28.

The square root of 25116427 is about 5011.6291762260. The cubic root of 25116427 is about 292.8549838202.

Adding to 25116427 its reverse (72461152), we get a palindrome (97577579).

The spelling of 25116427 in words is "twenty-five million, one hundred sixteen thousand, four hundred twenty-seven".