25000222 has 8 divisors (see below), whose sum is σ = 40385016. Its totient is φ = 11538552.

The previous prime is 25000211. The next prime is 25000231. The reversal of 25000222 is 22200052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25000222² = 1250022200098568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480748 + ... + 480799.

It is an arithmetic number, because the mean of its divisors is an integer number (5048127).

Almost surely, 2^25000222 is an apocalyptic number.

25000222 is a deficient number, since it is larger than the sum of its proper divisors (15384794).

25000222 is a wasteful number, since it uses less digits than its factorization.

25000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961562.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 25000222 is about 5000.0221999507. The cubic root of 25000222 is about 292.4026393280.

Adding to 25000222 its reverse (22200052), we get a palindrome (47200274).

The spelling of 25000222 in words is "twenty-five million, two hundred twenty-two", and thus it is an aban number.