25040345 has 12 divisors (see below), whose sum is σ = 33029220. Its totient is φ = 18210720.

The previous prime is 25040341. The next prime is 25040357. The reversal of 25040345 is 54304052.

It can be written as a sum of positive squares in 2 ways, for example, as 13337104 + 11703241 = 3652^2 + 3421^2 .

It is not a de Polignac number, because 25040345 - 2² = 25040341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25040345.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20090 + ... + 21299.

It is an arithmetic number, because the mean of its divisors is an integer number (2752435).

Almost surely, 2^25040345 is an apocalyptic number.

It is an amenable number.

25040345 is a deficient number, since it is larger than the sum of its proper divisors (7988875).

25040345 is a wasteful number, since it uses less digits than its factorization.

25040345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41416 (or 41405 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25040345 is about 5004.0328735931. The cubic root of 25040345 is about 292.5589819450.

Adding to 25040345 its reverse (54304052), we get a palindrome (79344397).

The spelling of 25040345 in words is "twenty-five million, forty thousand, three hundred forty-five".