1123621535625 has 80 divisors (see below), whose sum is σ = 1883704521600. Its totient is φ = 595558656000.

The previous prime is 1123621535623. The next prime is 1123621535651. The reversal of 1123621535625 is 5265351263211.

It is not a de Polignac number, because 1123621535625 - 2¹ = 1123621535623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123621535623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 557074617 + ... + 557076633.

It is an arithmetic number, because the mean of its divisors is an integer number (23546306520).

Almost surely, 2^{1123621535625} is an apocalyptic number.

1123621535625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123621535625 is a deficient number, since it is larger than the sum of its proper divisors (760082985975).

1123621535625 is a wasteful number, since it uses less digits than its factorization.

1123621535625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732 (or 3717 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

Adding to 1123621535625 its reverse (5265351263211), we get a palindrome (6388972798836).

The spelling of 1123621535625 in words is "one trillion, one hundred twenty-three billion, six hundred twenty-one million, five hundred thirty-five thousand, six hundred twenty-five".