1154221125 has 32 divisors (see below), whose sum is σ = 1924715520. Its totient is φ = 614273600.

The previous prime is 1154221087. The next prime is 1154221129. The reversal of 1154221125 is 5211224511.

It is a happy number.

It is not a de Polignac number, because 1154221125 - 2⁷ = 1154220997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1154221095 and 1154221104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154221129) 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, 187852 + ... + 193898.

It is an arithmetic number, because the mean of its divisors is an integer number (60147360).

Almost surely, 2^1154221125 is an apocalyptic number.

1154221125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1154221125 is a deficient number, since it is larger than the sum of its proper divisors (770494395).

1154221125 is an equidigital number, since it uses as much as digits as its factorization.

1154221125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574 (or 6564 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1154221125 is about 33973.8300019294. The cubic root of 1154221125 is about 1048.9698513359.

Adding to 1154221125 its reverse (5211224511), we get a palindrome (6365445636).

The spelling of 1154221125 in words is "one billion, one hundred fifty-four million, two hundred twenty-one thousand, one hundred twenty-five".