25262791 has 4 divisors (see below), whose sum is σ = 25307152. Its totient is φ = 25218432.

The previous prime is 25262789. The next prime is 25262803. The reversal of 25262791 is 19726252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25262791 - 2¹ = 25262789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25262701) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21315 + ... + 22468.

It is an arithmetic number, because the mean of its divisors is an integer number (6326788).

Almost surely, 2^25262791 is an apocalyptic number.

25262791 is a deficient number, since it is larger than the sum of its proper divisors (44361).

25262791 is an equidigital number, since it uses as much as digits as its factorization.

25262791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44360.

The product of its digits is 15120, while the sum is 34.

The square root of 25262791 is about 5026.2104014854. The cubic root of 25262791 is about 293.4227454991.

The spelling of 25262791 in words is "twenty-five million, two hundred sixty-two thousand, seven hundred ninety-one".