25643322 has 24 divisors (see below), whose sum is σ = 55675776. Its totient is φ = 8530056.

The previous prime is 25643311. The next prime is 25643329. The reversal of 25643322 is 22334652.

It is not an unprimeable number, because it can be changed into a prime (25643329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9753 + ... + 12099.

It is an arithmetic number, because the mean of its divisors is an integer number (2319824).

Almost surely, 2^25643322 is an apocalyptic number.

25643322 is an abundant number, since it is smaller than the sum of its proper divisors (30032454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25643322 is a wasteful number, since it uses less digits than its factorization.

25643322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962 (or 2959 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 25643322 is about 5063.9235776224. The cubic root of 25643322 is about 294.8886757962. Note that the first 3 decimals are identical.

Adding to 25643322 its reverse (22334652), we get a palindrome (47977974).

It can be divided in two parts, 2564 and 3322, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 25643322 in words is "twenty-five million, six hundred forty-three thousand, three hundred twenty-two".