25445145 has 16 divisors (see below), whose sum is σ = 44413632. Its totient is φ = 12336960.

The previous prime is 25445143. The next prime is 25445149. The reversal of 25445145 is 54154452.

It is not a de Polignac number, because 25445145 - 2¹ = 25445143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25445143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76942 + ... + 77271.

It is an arithmetic number, because the mean of its divisors is an integer number (2775852).

Almost surely, 2^25445145 is an apocalyptic number.

It is an amenable number.

25445145 is a deficient number, since it is larger than the sum of its proper divisors (18968487).

25445145 is a wasteful number, since it uses less digits than its factorization.

25445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154232.

The product of its digits is 16000, while the sum is 30.

The square root of 25445145 is about 5044.3180906838. The cubic root of 25445145 is about 294.1270564715.

Adding to 25445145 its reverse (54154452), we get a palindrome (79599597).

The spelling of 25445145 in words is "twenty-five million, four hundred forty-five thousand, one hundred forty-five".