25818045 has 32 divisors (see below), whose sum is σ = 46293120. Its totient is φ = 12176640.

The previous prime is 25818041. The next prime is 25818047. The reversal of 25818045 is 54081852.

It is not a de Polignac number, because 25818045 - 2² = 25818041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25817997 and 25818015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25818041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3991 + ... + 8219.

It is an arithmetic number, because the mean of its divisors is an integer number (1446660).

Almost surely, 2^25818045 is an apocalyptic number.

It is an amenable number.

25818045 is a deficient number, since it is larger than the sum of its proper divisors (20475075).

25818045 is a wasteful number, since it uses less digits than its factorization.

25818045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 25818045 is about 5081.1460321467. The cubic root of 25818045 is about 295.5569102571.

Adding to 25818045 its reverse (54081852), we get a palindrome (79899897).

The spelling of 25818045 in words is "twenty-five million, eight hundred eighteen thousand, forty-five".