25163401 has 4 divisors (see below), whose sum is σ = 25291332. Its totient is φ = 25035472.

The previous prime is 25163389. The next prime is 25163407. The reversal of 25163401 is 10436152.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 13329801 = 3440^2 + 3651^2 .

It is a cyclic number.

It is not a de Polignac number, because 25163401 - 2⁷ = 25163273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25163407) 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, 63670 + ... + 64063.

It is an arithmetic number, because the mean of its divisors is an integer number (6322833).

Almost surely, 2^25163401 is an apocalyptic number.

It is an amenable number.

25163401 is a deficient number, since it is larger than the sum of its proper divisors (127931).

25163401 is a wasteful number, since it uses less digits than its factorization.

25163401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127930.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 25163401 is about 5016.3134870141. The cubic root of 25163401 is about 293.0374408079.

Adding to 25163401 its reverse (10436152), we get a palindrome (35599553).

The spelling of 25163401 in words is "twenty-five million, one hundred sixty-three thousand, four hundred one".