25320271 has 4 divisors (see below), whose sum is σ = 25460344. Its totient is φ = 25180200.

The previous prime is 25320241. The next prime is 25320283. The reversal of 25320271 is 17202352.

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 25320271 - 2⁷ = 25320143 is a prime.

It is a super-2 number, since 2×25320271² = 1282232247026882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320221) 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, 69765 + ... + 70126.

It is an arithmetic number, because the mean of its divisors is an integer number (6365086).

Almost surely, 2^25320271 is an apocalyptic number.

25320271 is a deficient number, since it is larger than the sum of its proper divisors (140073).

25320271 is a wasteful number, since it uses less digits than its factorization.

25320271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140072.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25320271 is about 5031.9251782991. The cubic root of 25320271 is about 293.6451168642.

The spelling of 25320271 in words is "twenty-five million, three hundred twenty thousand, two hundred seventy-one".