1225766602601 has 4 divisors (see below), whose sum is σ = 1226079541572. Its totient is φ = 1225453663632.

The previous prime is 1225766602561. The next prime is 1225766602657. The reversal of 1225766602601 is 1062066675221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 588252184576 + 637514418025 = 766976^2 + 798445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225766602601 - 2¹⁴ = 1225766586217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225766902601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 156463610 + ... + 156471443.

It is an arithmetic number, because the mean of its divisors is an integer number (306519885393).

Almost surely, 2^{1225766602601} is an apocalyptic number.

It is an amenable number.

1225766602601 is a deficient number, since it is larger than the sum of its proper divisors (312938971).

1225766602601 is an equidigital number, since it uses as much as digits as its factorization.

1225766602601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312938970.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 1225766602601 in words is "one trillion, two hundred twenty-five billion, seven hundred sixty-six million, six hundred two thousand, six hundred one".