25132281 has 4 divisors (see below), whose sum is σ = 33509712. Its totient is φ = 16754852.

The previous prime is 25132259. The next prime is 25132291. The reversal of 25132281 is 18223152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25132281 - 2⁵ = 25132249 is a prime.

It is a super-2 number, since 2×25132281² = 1263263096525922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25132291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4188711 + ... + 4188716.

It is an arithmetic number, because the mean of its divisors is an integer number (8377428).

Almost surely, 2^25132281 is an apocalyptic number.

It is an amenable number.

25132281 is a deficient number, since it is larger than the sum of its proper divisors (8377431).

25132281 is an equidigital number, since it uses as much as digits as its factorization.

25132281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377430.

The product of its digits is 960, while the sum is 24.

The square root of 25132281 is about 5013.2106478783. The cubic root of 25132281 is about 292.9165895355.

The spelling of 25132281 in words is "twenty-five million, one hundred thirty-two thousand, two hundred eighty-one".