25262321 has 4 divisors (see below), whose sum is σ = 28871232. Its totient is φ = 21653412.

The previous prime is 25262317. The next prime is 25262327. The reversal of 25262321 is 12326252.

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 25262321 - 2² = 25262317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25262327) 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, 1804445 + ... + 1804458.

It is an arithmetic number, because the mean of its divisors is an integer number (7217808).

Almost surely, 2^25262321 is an apocalyptic number.

It is an amenable number.

25262321 is a deficient number, since it is larger than the sum of its proper divisors (3608911).

25262321 is an equidigital number, since it uses as much as digits as its factorization.

25262321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608910.

The product of its digits is 1440, while the sum is 23.

The square root of 25262321 is about 5026.1636463609. The cubic root of 25262321 is about 293.4209258328.

Adding to 25262321 its reverse (12326252), we get a palindrome (37588573).

The spelling of 25262321 in words is "twenty-five million, two hundred sixty-two thousand, three hundred twenty-one".