25263745 has 8 divisors (see below), whose sum is σ = 32648616. Its totient is φ = 18656256.

The previous prime is 25263731. The next prime is 25263773. The reversal of 25263745 is 54736252.

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 25040016 = 473^2 + 5004^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25263745 - 2⁵ = 25263713 is a prime.

It is a super-2 number, since 2×25263745² = 1276513622850050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25263745.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 194272 + ... + 194401.

It is an arithmetic number, because the mean of its divisors is an integer number (4081077).

Almost surely, 2^25263745 is an apocalyptic number.

It is an amenable number.

25263745 is a deficient number, since it is larger than the sum of its proper divisors (7384871).

25263745 is a wasteful number, since it uses less digits than its factorization.

25263745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388691.

The product of its digits is 50400, while the sum is 34.

The square root of 25263745 is about 5026.3053031029. The cubic root of 25263745 is about 293.4264389651.

Adding to 25263745 its reverse (54736252), we get a palindrome (79999997).

The spelling of 25263745 in words is "twenty-five million, two hundred sixty-three thousand, seven hundred forty-five".