1225266163140 has 96 divisors (see below), whose sum is σ = 3542909690880. Its totient is φ = 316064217600.

The previous prime is 1225266163139. The next prime is 1225266163153. The reversal of 1225266163140 is 413616625221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4305670 + ... + 4581410.

It is an arithmetic number, because the mean of its divisors is an integer number (36905309280).

Almost surely, 2^{1225266163140} is an apocalyptic number.

1225266163140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225266163140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771454845440).

1225266163140 is an abundant number, since it is smaller than the sum of its proper divisors (2317643527740).

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

1225266163140 is a wasteful number, since it uses less digits than its factorization.

1225266163140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278173 (or 278171 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 1225266163140 in words is "one trillion, two hundred twenty-five billion, two hundred sixty-six million, one hundred sixty-three thousand, one hundred forty".