1125201345 has 32 divisors (see below), whose sum is σ = 1827264000. Its totient is φ = 591162624.

The previous prime is 1125201281. The next prime is 1125201349. The reversal of 1125201345 is 5431025211.

It is a happy number.

It is not a de Polignac number, because 1125201345 - 2⁶ = 1125201281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1125201349) 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, 725631 + ... + 727179.

It is an arithmetic number, because the mean of its divisors is an integer number (57102000).

Almost surely, 2^1125201345 is an apocalyptic number.

1125201345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125201345 is a deficient number, since it is larger than the sum of its proper divisors (702062655).

1125201345 is a wasteful number, since it uses less digits than its factorization.

1125201345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1125201345 is about 33544.0210022591. The cubic root of 1125201345 is about 1040.1039544140.

Adding to 1125201345 its reverse (5431025211), we get a palindrome (6556226556).

The spelling of 1125201345 in words is "one billion, one hundred twenty-five million, two hundred one thousand, three hundred forty-five".