1225105213044 has 48 divisors (see below), whose sum is σ = 3097119630528. Its totient is φ = 375408434688.

The previous prime is 1225105212923. The next prime is 1225105213097. The reversal of 1225105213044 is 4403125015221.

It is a congruent number.

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, 69821667 + ... + 69839210.

It is an arithmetic number, because the mean of its divisors is an integer number (64523325636).

Almost surely, 2^{1225105213044} is an apocalyptic number.

It is an amenable number.

1225105213044 is an abundant number, since it is smaller than the sum of its proper divisors (1872014417484).

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

1225105213044 is a wasteful number, since it uses less digits than its factorization.

1225105213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139660944 (or 139660942 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 1225105213044 in words is "one trillion, two hundred twenty-five billion, one hundred five million, two hundred thirteen thousand, forty-four".