25040545 has 8 divisors (see below), whose sum is σ = 30781800. Its totient is φ = 19543680.

The previous prime is 25040503. The next prime is 25040557. The reversal of 25040545 is 54504052.

It can be written as a sum of positive squares in 4 ways, for example, as 529 + 25040016 = 23^2 + 5004^2 .

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

It is not a de Polignac number, because 25040545 - 2¹³ = 25032353 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60870 + ... + 61279.

It is an arithmetic number, because the mean of its divisors is an integer number (3847725).

Almost surely, 2^25040545 is an apocalyptic number.

It is an amenable number.

25040545 is a deficient number, since it is larger than the sum of its proper divisors (5741255).

25040545 is a wasteful number, since it uses less digits than its factorization.

25040545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122195.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 25040545 is about 5004.0528574347. The cubic root of 25040545 is about 292.5597608432.

Adding to 25040545 its reverse (54504052), we get a palindrome (79544597).

The spelling of 25040545 in words is "twenty-five million, forty thousand, five hundred forty-five".