1225664233727 has 16 divisors (see below), whose sum is σ = 1312367680800. Its totient is φ = 1142827201152.

The previous prime is 1225664233711. The next prime is 1225664233817. The reversal of 1225664233727 is 7273324665221.

It is a cyclic number.

It is not a de Polignac number, because 1225664233727 - 2⁴ = 1225664233711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225664233327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7183352 + ... + 7351997.

It is an arithmetic number, because the mean of its divisors is an integer number (82022980050).

Almost surely, 2^{1225664233727} is an apocalyptic number.

1225664233727 is a deficient number, since it is larger than the sum of its proper divisors (86703447073).

1225664233727 is a wasteful number, since it uses less digits than its factorization.

1225664233727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14535482.

The product of its digits is 5080320, while the sum is 50.

Adding to 1225664233727 its reverse (7273324665221), we get a palindrome (8498988898948).

The spelling of 1225664233727 in words is "one trillion, two hundred twenty-five billion, six hundred sixty-four million, two hundred thirty-three thousand, seven hundred twenty-seven".