25312233 has 4 divisors (see below), whose sum is σ = 33749648. Its totient is φ = 16874820.

The previous prime is 25312229. The next prime is 25312249. The reversal of 25312233 is 33221352.

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 not a de Polignac number, because 25312233 - 2² = 25312229 is a prime.

It is a super-3 number, since 3×25312233³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25312253) 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, 4218703 + ... + 4218708.

It is an arithmetic number, because the mean of its divisors is an integer number (8437412).

Almost surely, 2^25312233 is an apocalyptic number.

It is an amenable number.

25312233 is a deficient number, since it is larger than the sum of its proper divisors (8437415).

25312233 is an equidigital number, since it uses as much as digits as its factorization.

25312233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8437414.

The product of its digits is 1080, while the sum is 21.

The square root of 25312233 is about 5031.1264146312. The cubic root of 25312233 is about 293.6140407189.

Adding to 25312233 its reverse (33221352), we get a palindrome (58533585).

The spelling of 25312233 in words is "twenty-five million, three hundred twelve thousand, two hundred thirty-three".