25081291 has 4 divisors (see below), whose sum is σ = 25174800. Its totient is φ = 24987784.

The previous prime is 25081289. The next prime is 25081297. The reversal of 25081291 is 19218052.

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 25081291 - 2¹ = 25081289 is a prime.

It is a super-3 number, since 3×25081291³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25081297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46351 + ... + 46888.

It is an arithmetic number, because the mean of its divisors is an integer number (6293700).

Almost surely, 2^25081291 is an apocalyptic number.

25081291 is a deficient number, since it is larger than the sum of its proper divisors (93509).

25081291 is an equidigital number, since it uses as much as digits as its factorization.

25081291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93508.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 25081291 is about 5008.1225024953. The cubic root of 25081291 is about 292.7183593627.

The spelling of 25081291 in words is "twenty-five million, eighty-one thousand, two hundred ninety-one".