1125161123545 has 16 divisors (see below), whose sum is σ = 1366521347520. Its totient is φ = 889244528704.

The previous prime is 1125161123543. The next prime is 1125161123587. The reversal of 1125161123545 is 5453211615211.

It is a cyclic number.

It is not a de Polignac number, because 1125161123545 - 2¹ = 1125161123543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125161123543) 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, 12429387 + ... + 12519583.

It is an arithmetic number, because the mean of its divisors is an integer number (85407584220).

Almost surely, 2^{1125161123545} is an apocalyptic number.

It is an amenable number.

1125161123545 is a deficient number, since it is larger than the sum of its proper divisors (241360223975).

1125161123545 is an equidigital number, since it uses as much as digits as its factorization.

1125161123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120344.

The product of its digits is 36000, while the sum is 37.

Adding to 1125161123545 its reverse (5453211615211), we get a palindrome (6578372738756).

The spelling of 1125161123545 in words is "one trillion, one hundred twenty-five billion, one hundred sixty-one million, one hundred twenty-three thousand, five hundred forty-five".