1225944858 has 8 divisors (see below), whose sum is σ = 2451889728. Its totient is φ = 408648284.

The previous prime is 1225944821. The next prime is 1225944883. The reversal of 1225944858 is 8584495221.

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

1225944858 is an admirable number.

It is a Curzon 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, 102162066 + ... + 102162077.

It is an arithmetic number, because the mean of its divisors is an integer number (306486216).

Almost surely, 2^1225944858 is an apocalyptic number.

1225944858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1225944858 is a wasteful number, since it uses less digits than its factorization.

1225944858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204324148.

The product of its digits is 921600, while the sum is 48.

The square root of 1225944858 is about 35013.4953696428. The cubic root of 1225944858 is about 1070.2625081606.

The spelling of 1225944858 in words is "one billion, two hundred twenty-five million, nine hundred forty-four thousand, eight hundred fifty-eight".