1125412321545 has 32 divisors (see below), whose sum is σ = 2001851798400. Its totient is φ = 599884270272.

The previous prime is 1125412321427. The next prime is 1125412321577. The reversal of 1125412321545 is 5451232145211.

1125412321545 is a `hidden beast` number, since 1 + 1 + 25 + 412 + 3 + 215 + 4 + 5 = 666.

It is not a de Polignac number, because 1125412321545 - 2⁸ = 1125412321289 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 2088387 + ... + 2571416.

It is an arithmetic number, because the mean of its divisors is an integer number (62557868700).

Almost surely, 2^{1125412321545} is an apocalyptic number.

1125412321545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125412321545 is a deficient number, since it is larger than the sum of its proper divisors (876439476855).

1125412321545 is a wasteful number, since it uses less digits than its factorization.

1125412321545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661606 (or 4661600 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 1125412321545 its reverse (5451232145211), we get a palindrome (6576644466756).

The spelling of 1125412321545 in words is "one trillion, one hundred twenty-five billion, four hundred twelve million, three hundred twenty-one thousand, five hundred forty-five".