1225599476640 has 384 divisors, whose sum is σ = 4828686815232. Its totient is φ = 253853982720.

The previous prime is 1225599476627. The next prime is 1225599476677. The reversal of 1225599476640 is 466749955221.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11515509 + ... + 11621451.

It is an arithmetic number, because the mean of its divisors is an integer number (12574705248).

Almost surely, 2^{1225599476640} is an apocalyptic number.

1225599476640 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 1225599476640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2414343407616).

1225599476640 is an abundant number, since it is smaller than the sum of its proper divisors (3603087338592).

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

1225599476640 is a wasteful number, since it uses less digits than its factorization.

1225599476640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106292 (or 106284 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 1225599476640 in words is "one trillion, two hundred twenty-five billion, five hundred ninety-nine million, four hundred seventy-six thousand, six hundred forty".