1225779244700 has 36 divisors (see below), whose sum is σ = 2663229073680. Its totient is φ = 489705594240.

The previous prime is 1225779244699. The next prime is 1225779244721. The reversal of 1225779244700 is 74429775221.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7494992 + ... + 7656791.

It is an arithmetic number, because the mean of its divisors is an integer number (73978585380).

Almost surely, 2^{1225779244700} is an apocalyptic number.

1225779244700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225779244700 is an abundant number, since it is smaller than the sum of its proper divisors (1437449828980).

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

1225779244700 is a wasteful number, since it uses less digits than its factorization.

1225779244700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152606 (or 15152599 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 1225779244700 in words is "one trillion, two hundred twenty-five billion, seven hundred seventy-nine million, two hundred forty-four thousand, seven hundred".