25553233 has 4 divisors (see below), whose sum is σ = 26898160. Its totient is φ = 24208308.

The previous prime is 25553219. The next prime is 25553237. The reversal of 25553233 is 33235552.

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 25553233 - 2⁹ = 25552721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25553237) 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, 672435 + ... + 672472.

It is an arithmetic number, because the mean of its divisors is an integer number (6724540).

Almost surely, 2^25553233 is an apocalyptic number.

It is an amenable number.

25553233 is a deficient number, since it is larger than the sum of its proper divisors (1344927).

25553233 is a wasteful number, since it uses less digits than its factorization.

25553233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344926.

The product of its digits is 13500, while the sum is 28.

The square root of 25553233 is about 5055.0205736475. The cubic root of 25553233 is about 294.5429405959.

Adding to 25553233 its reverse (33235552), we get a palindrome (58788785).

The spelling of 25553233 in words is "twenty-five million, five hundred fifty-three thousand, two hundred thirty-three".