25105427 has 4 divisors (see below), whose sum is σ = 25154136. Its totient is φ = 25056720.

The previous prime is 25105391. The next prime is 25105429. The reversal of 25105427 is 72450152.

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

It is a cyclic number.

It is not a de Polignac number, because 25105427 - 2¹⁰ = 25104403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25105396 and 25105405.

It is not an unprimeable number, because it can be changed into a prime (25105429) 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, 23573 + ... + 24614.

It is an arithmetic number, because the mean of its divisors is an integer number (6288534).

Almost surely, 2^25105427 is an apocalyptic number.

25105427 is a deficient number, since it is larger than the sum of its proper divisors (48709).

25105427 is an equidigital number, since it uses as much as digits as its factorization.

25105427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48708.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25105427 is about 5010.5316085222. The cubic root of 25105427 is about 292.8122246170.

Adding to 25105427 its reverse (72450152), we get a palindrome (97555579).

The spelling of 25105427 in words is "twenty-five million, one hundred five thousand, four hundred twenty-seven".