25430545 has 16 divisors (see below), whose sum is σ = 34963200. Its totient is φ = 17394624.

The previous prime is 25430543. The next prime is 25430549. The reversal of 25430545 is 54503452.

It is a cyclic number.

It is not a de Polignac number, because 25430545 - 2¹ = 25430543 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25430543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20359 + ... + 21571.

It is an arithmetic number, because the mean of its divisors is an integer number (2185200).

Almost surely, 2^25430545 is an apocalyptic number.

It is an amenable number.

25430545 is a deficient number, since it is larger than the sum of its proper divisors (9532655).

25430545 is a wasteful number, since it uses less digits than its factorization.

25430545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 25430545 is about 5042.8707102205. The cubic root of 25430545 is about 294.0707906415.

Adding to 25430545 its reverse (54503452), we get a palindrome (79933997).

The spelling of 25430545 in words is "twenty-five million, four hundred thirty thousand, five hundred forty-five".