1125434601 has 16 divisors (see below), whose sum is σ = 1668068800. Its totient is φ = 749948544.

The previous prime is 1125434593. The next prime is 1125434603. The reversal of 1125434601 is 1064345211.

It is a happy number.

1125434601 is a `hidden beast` number, since 1 + 1 + 2 + 54 + 3 + 4 + 601 = 666.

It is not a de Polignac number, because 1125434601 - 2³ = 1125434593 is a prime.

It is a super-2 number, since 2×1125434601² = 2533206082256058402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125434603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60345 + ... + 76761.

It is an arithmetic number, because the mean of its divisors is an integer number (104254300).

Almost surely, 2^1125434601 is an apocalyptic number.

It is an amenable number.

1125434601 is a deficient number, since it is larger than the sum of its proper divisors (542634199).

1125434601 is a wasteful number, since it uses less digits than its factorization.

1125434601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18965 (or 18959 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1125434601 is about 33547.4976861166. The cubic root of 1125434601 is about 1040.1758211741.

Adding to 1125434601 its reverse (1064345211), we get a palindrome (2189779812).

The spelling of 1125434601 in words is "one billion, one hundred twenty-five million, four hundred thirty-four thousand, six hundred one".