1125611200645 has 8 divisors (see below), whose sum is σ = 1353132615456. Its totient is φ = 898889510736.

The previous prime is 1125611200621. The next prime is 1125611200663. The reversal of 1125611200645 is 5460021165211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125611200645 - 2⁷ = 1125611200517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125611200645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199928127 + ... + 199933756.

It is an arithmetic number, because the mean of its divisors is an integer number (169141576932).

Almost surely, 2^{1125611200645} is an apocalyptic number.

It is an amenable number.

1125611200645 is a deficient number, since it is larger than the sum of its proper divisors (227521414811).

1125611200645 is an equidigital number, since it uses as much as digits as its factorization.

1125611200645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399862451.

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 1125611200645 its reverse (5460021165211), we get a palindrome (6585632365856).

The spelling of 1125611200645 in words is "one trillion, one hundred twenty-five billion, six hundred eleven million, two hundred thousand, six hundred forty-five".