1225431099040 has 48 divisors (see below), whose sum is σ = 2895502734432. Its totient is φ = 490101030144.

The previous prime is 1225431099037. The next prime is 1225431099073. The reversal of 1225431099040 is 409901345221.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1225431098984 and 1225431099002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550687 + ... + 1659553.

It is an arithmetic number, because the mean of its divisors is an integer number (60322973634).

Almost surely, 2^{1225431099040} is an apocalyptic number.

1225431099040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225431099040 is an abundant number, since it is smaller than the sum of its proper divisors (1670071635392).

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

1225431099040 is a wasteful number, since it uses less digits than its factorization.

1225431099040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115789 (or 1115781 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 1225431099040 in words is "one trillion, two hundred twenty-five billion, four hundred thirty-one million, ninety-nine thousand, forty".