1225460672720 has 40 divisors (see below), whose sum is σ = 2849263840800. Its totient is φ = 490172608640.

The previous prime is 1225460672713. The next prime is 1225460672749. The reversal of 1225460672720 is 272760645221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3721331 + ... + 4037229.

It is an arithmetic number, because the mean of its divisors is an integer number (71231596020).

Almost surely, 2^{1225460672720} is an apocalyptic number.

1225460672720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225460672720 is an abundant number, since it is smaller than the sum of its proper divisors (1623803168080).

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

1225460672720 is a wasteful number, since it uses less digits than its factorization.

1225460672720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364403 (or 364397 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 1225460672720 in words is "one trillion, two hundred twenty-five billion, four hundred sixty million, six hundred seventy-two thousand, seven hundred twenty".