1225666603722 has 16 divisors (see below), whose sum is σ = 2674181680992. Its totient is φ = 371414122320.

The previous prime is 1225666603717. The next prime is 1225666603793. The reversal of 1225666603722 is 2273066665221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9285352993 + ... + 9285353124.

It is an arithmetic number, because the mean of its divisors is an integer number (167136355062).

Almost surely, 2^{1225666603722} is an apocalyptic number.

1225666603722 is an abundant number, since it is smaller than the sum of its proper divisors (1448515077270).

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

1225666603722 is a wasteful number, since it uses less digits than its factorization.

1225666603722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18570706133.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 1225666603722 in words is "one trillion, two hundred twenty-five billion, six hundred sixty-six million, six hundred three thousand, seven hundred twenty-two".