25242241 has 4 divisors (see below), whose sum is σ = 26570800. Its totient is φ = 23913684.

The previous prime is 25242199. The next prime is 25242281. The reversal of 25242241 is 14224252.

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 25242241 - 2¹³ = 25234049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25242281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664251 + ... + 664288.

It is an arithmetic number, because the mean of its divisors is an integer number (6642700).

Almost surely, 2^25242241 is an apocalyptic number.

It is an amenable number.

25242241 is a deficient number, since it is larger than the sum of its proper divisors (1328559).

25242241 is a wasteful number, since it uses less digits than its factorization.

25242241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328558.

The product of its digits is 1280, while the sum is 22.

The square root of 25242241 is about 5024.1657018852. The cubic root of 25242241 is about 293.3431624059.

Adding to 25242241 its reverse (14224252), we get a palindrome (39466493).

The spelling of 25242241 in words is "twenty-five million, two hundred forty-two thousand, two hundred forty-one".