1125453663 has 32 divisors (see below), whose sum is σ = 1764998400. Its totient is φ = 707561568.

The previous prime is 1125453647. The next prime is 1125453673. The reversal of 1125453663 is 3663545211.

1125453663 is a `hidden beast` number, since 1 + 12 + 54 + 536 + 63 = 666.

It is not a de Polignac number, because 1125453663 - 2⁴ = 1125453647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125453673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16956 + ... + 50382.

It is an arithmetic number, because the mean of its divisors is an integer number (55156200).

Almost surely, 2^1125453663 is an apocalyptic number.

1125453663 is a deficient number, since it is larger than the sum of its proper divisors (639544737).

1125453663 is a wasteful number, since it uses less digits than its factorization.

1125453663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33508 (or 33502 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 1125453663 is about 33547.7817895610. The cubic root of 1125453663 is about 1040.1816937853.

Adding to 1125453663 its reverse (3663545211), we get a palindrome (4788998874).

The spelling of 1125453663 in words is "one billion, one hundred twenty-five million, four hundred fifty-three thousand, six hundred sixty-three".