25799045 has 16 divisors (see below), whose sum is σ = 31894128. Its totient is φ = 20021760.

The previous prime is 25799041. The next prime is 25799051. The reversal of 25799045 is 54099752.

It can be written as a sum of positive squares in 8 ways, for example, as 6806881 + 18992164 = 2609^2 + 4358^2 .

It is not a de Polignac number, because 25799045 - 2² = 25799041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25798993 and 25799011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25799041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64787 + ... + 65183.

It is an arithmetic number, because the mean of its divisors is an integer number (1993383).

Almost surely, 2^25799045 is an apocalyptic number.

It is an amenable number.

25799045 is a deficient number, since it is larger than the sum of its proper divisors (6095083).

25799045 is a wasteful number, since it uses less digits than its factorization.

25799045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 25799045 is about 5079.2760310895. The cubic root of 25799045 is about 295.4843904440.

The spelling of 25799045 in words is "twenty-five million, seven hundred ninety-nine thousand, forty-five".