25705222 has 4 divisors (see below), whose sum is σ = 38557836. Its totient is φ = 12852610.

The previous prime is 25705219. The next prime is 25705249. The reversal of 25705222 is 22250752.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6426304 + ... + 6426307.

It is an arithmetic number, because the mean of its divisors is an integer number (9639459).

Almost surely, 2^25705222 is an apocalyptic number.

25705222 is a deficient number, since it is larger than the sum of its proper divisors (12852614).

25705222 is a wasteful number, since it uses less digits than its factorization.

25705222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12852613.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 25705222 is about 5070.0317553246. The cubic root of 25705222 is about 295.1257608007.

Adding to 25705222 its reverse (22250752), we get a palindrome (47955974).

The spelling of 25705222 in words is "twenty-five million, seven hundred five thousand, two hundred twenty-two".