25004045 has 24 divisors (see below), whose sum is σ = 33902232. Its totient is φ = 17677440.

The previous prime is 25004039. The next prime is 25004051. The reversal of 25004045 is 54040052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25004039) and next prime (25004051).

It can be written as a sum of positive squares in 4 ways, for example, as 1684804 + 23319241 = 1298^2 + 4829^2 .

It is not a de Polignac number, because 25004045 - 2⁸ = 25003789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21827 + ... + 22943.

It is an arithmetic number, because the mean of its divisors is an integer number (1412593).

Almost surely, 2^25004045 is an apocalyptic number.

It is an amenable number.

25004045 is a deficient number, since it is larger than the sum of its proper divisors (8898187).

25004045 is a wasteful number, since it uses less digits than its factorization.

25004045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 25004045 is about 5000.4044836393. The cubic root of 25004045 is about 292.4175431732.

Adding to 25004045 its reverse (54040052), we get a palindrome (79044097).

The spelling of 25004045 in words is "twenty-five million, four thousand, forty-five".