1225731942480 has 160 divisors (see below), whose sum is σ = 3929225084928. Its totient is φ = 315762854400.

The previous prime is 1225731942433. The next prime is 1225731942529. The reversal of 1225731942480 is 842491375221.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 4103977 + ... + 4392503.

Almost surely, 2^{1225731942480} is an apocalyptic number.

1225731942480 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 1225731942480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964612542464).

1225731942480 is an abundant number, since it is smaller than the sum of its proper divisors (2703493142448).

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

1225731942480 is a wasteful number, since it uses less digits than its factorization.

1225731942480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289145 (or 289139 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 1225731942480 in words is "one trillion, two hundred twenty-five billion, seven hundred thirty-one million, nine hundred forty-two thousand, four hundred eighty".