25163641 has 8 divisors (see below), whose sum is σ = 25449120. Its totient is φ = 24880128.

The previous prime is 25163639. The next prime is 25163647. The reversal of 25163641 is 14636152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25163641 - 2¹ = 25163639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25163647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45730 + ... + 46276.

It is an arithmetic number, because the mean of its divisors is an integer number (3181140).

Almost surely, 2^25163641 is an apocalyptic number.

It is an amenable number.

25163641 is a deficient number, since it is larger than the sum of its proper divisors (285479).

25163641 is a wasteful number, since it uses less digits than its factorization.

25163641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its digits is 4320, while the sum is 28.

The square root of 25163641 is about 5016.3374089070. The cubic root of 25163641 is about 293.0383724356.

Adding to 25163641 its reverse (14636152), we get a palindrome (39799793).

The spelling of 25163641 in words is "twenty-five million, one hundred sixty-three thousand, six hundred forty-one".