1125553245 has 32 divisors (see below), whose sum is σ = 1817973504. Its totient is φ = 594624000.

The previous prime is 1125553241. The next prime is 1125553267. The reversal of 1125553245 is 5423555211.

It is not a de Polignac number, because 1125553245 - 2² = 1125553241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125553241) 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, 1478665 + ... + 1479425.

It is an arithmetic number, because the mean of its divisors is an integer number (56811672).

Almost surely, 2^1125553245 is an apocalyptic number.

1125553245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125553245 is a deficient number, since it is larger than the sum of its proper divisors (692420259).

1125553245 is a wasteful number, since it uses less digits than its factorization.

1125553245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its digits is 30000, while the sum is 33.

The square root of 1125553245 is about 33549.2659383182. The cubic root of 1125553245 is about 1040.2123718789.

The spelling of 1125553245 in words is "one billion, one hundred twenty-five million, five hundred fifty-three thousand, two hundred forty-five".