1125225285 has 32 divisors (see below), whose sum is σ = 1856062080. Its totient is φ = 581833728.

The previous prime is 1125225281. The next prime is 1125225287. The reversal of 1125225285 is 5825225211.

It is not a de Polignac number, because 1125225285 - 2² = 1125225281 is a prime.

It is a super-2 number, since 2×1125225285² = 2532263884006662450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125225281) 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, 55897 + ... + 73313.

It is an arithmetic number, because the mean of its divisors is an integer number (58001940).

Almost surely, 2^1125225285 is an apocalyptic number.

1125225285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125225285 is a deficient number, since it is larger than the sum of its proper divisors (730836795).

1125225285 is a wasteful number, since it uses less digits than its factorization.

1125225285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17557.

The product of its digits is 16000, while the sum is 33.

The square root of 1125225285 is about 33544.3778448789. The cubic root of 1125225285 is about 1040.1113308455. Note that the first 3 decimals are identical.

The spelling of 1125225285 in words is "one billion, one hundred twenty-five million, two hundred twenty-five thousand, two hundred eighty-five".