25422545 has 4 divisors (see below), whose sum is σ = 30507060. Its totient is φ = 20338032.

The previous prime is 25422541. The next prime is 25422557. The reversal of 25422545 is 54522452.

25422545 is nontrivially palindromic in base 13.

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 4592449 + 20830096 = 2143^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 25422545 - 2² = 25422541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25422541) 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, 2542250 + ... + 2542259.

It is an arithmetic number, because the mean of its divisors is an integer number (7626765).

Almost surely, 2^25422545 is an apocalyptic number.

It is an amenable number.

25422545 is a deficient number, since it is larger than the sum of its proper divisors (5084515).

25422545 is an equidigital number, since it uses as much as digits as its factorization.

25422545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084514.

The product of its digits is 16000, while the sum is 29.

The square root of 25422545 is about 5042.0774488300. The cubic root of 25422545 is about 294.0399509163.

Adding to 25422545 its reverse (54522452), we get a palindrome (79944997).

The spelling of 25422545 in words is "twenty-five million, four hundred twenty-two thousand, five hundred forty-five".