1125052033551 has 4 divisors (see below), whose sum is σ = 1500069378072. Its totient is φ = 750034689032.

The previous prime is 1125052033513. The next prime is 1125052033571. The reversal of 1125052033551 is 1553302505211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125052033551 - 2⁶ = 1125052033487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125052033571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187508672256 + ... + 187508672261.

It is an arithmetic number, because the mean of its divisors is an integer number (375017344518).

Almost surely, 2^{1125052033551} is an apocalyptic number.

1125052033551 is a deficient number, since it is larger than the sum of its proper divisors (375017344521).

1125052033551 is an equidigital number, since it uses as much as digits as its factorization.

1125052033551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375017344520.

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 1125052033551 its reverse (1553302505211), we get a palindrome (2678354538762).

The spelling of 1125052033551 in words is "one trillion, one hundred twenty-five billion, fifty-two million, thirty-three thousand, five hundred fifty-one".