1125643450045 has 4 divisors (see below), whose sum is σ = 1350772140060. Its totient is φ = 900514760032.

The previous prime is 1125643450027. The next prime is 1125643450069. The reversal of 1125643450045 is 5400543465211.

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 399599715321 + 726043734724 = 632139^2 + 852082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125643450045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112564345000 + ... + 112564345009.

It is an arithmetic number, because the mean of its divisors is an integer number (337693035015).

Almost surely, 2^{1125643450045} is an apocalyptic number.

It is an amenable number.

1125643450045 is a deficient number, since it is larger than the sum of its proper divisors (225128690015).

1125643450045 is an equidigital number, since it uses as much as digits as its factorization.

1125643450045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225128690014.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 1125643450045 in words is "one trillion, one hundred twenty-five billion, six hundred forty-three million, four hundred fifty thousand, forty-five".