25255533 has 4 divisors (see below), whose sum is σ = 33674048. Its totient is φ = 16837020.

The previous prime is 25255519. The next prime is 25255547. The reversal of 25255533 is 33555252.

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 an interprime number because it is at equal distance from previous prime (25255519) and next prime (25255547).

It is not a de Polignac number, because 25255533 - 2⁵ = 25255501 is a prime.

It is a super-2 number, since 2×25255533² = 1275683894228178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25255533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255513) 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, 4209253 + ... + 4209258.

It is an arithmetic number, because the mean of its divisors is an integer number (8418512).

Almost surely, 2^25255533 is an apocalyptic number.

It is an amenable number.

25255533 is a deficient number, since it is larger than the sum of its proper divisors (8418515).

25255533 is an equidigital number, since it uses as much as digits as its factorization.

25255533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418514.

The product of its digits is 22500, while the sum is 30.

The square root of 25255533 is about 5025.4883344805. The cubic root of 25255533 is about 293.3946426888.

The spelling of 25255533 in words is "twenty-five million, two hundred fifty-five thousand, five hundred thirty-three".