1225259844 has 48 divisors (see below), whose sum is σ = 2934254400. Its totient is φ = 397789056.

The previous prime is 1225259839. The next prime is 1225259863. The reversal of 1225259844 is 4489525221.

It is a junction number, because it is equal to n+sod(n) for n = 1225259796 and 1225259805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69234 + ... + 85110.

It is an arithmetic number, because the mean of its divisors is an integer number (61130300).

Almost surely, 2^1225259844 is an apocalyptic number.

It is an amenable number.

1225259844 is an abundant number, since it is smaller than the sum of its proper divisors (1708994556).

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

1225259844 is a wasteful number, since it uses less digits than its factorization.

1225259844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16052 (or 16050 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 1225259844 is about 35003.7118603156. The cubic root of 1225259844 is about 1070.0631295912.

The spelling of 1225259844 in words is "one billion, two hundred twenty-five million, two hundred fifty-nine thousand, eight hundred forty-four".