1151225020 has 24 divisors (see below), whose sum is σ = 2637352368. Its totient is φ = 418627200.

The previous prime is 1151225017. The next prime is 1151225041. The reversal of 1151225020 is 205221511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616201 + ... + 2616640.

It is an arithmetic number, because the mean of its divisors is an integer number (109889682).

Almost surely, 2^1151225020 is an apocalyptic number.

1151225020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151225020 is an abundant number, since it is smaller than the sum of its proper divisors (1486127348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151225020 is a wasteful number, since it uses less digits than its factorization.

1151225020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232861 (or 5232859 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1151225020 is about 33929.7070426492. The cubic root of 1151225020 is about 1048.0614329409.

Adding to 1151225020 its reverse (205221511), we get a palindrome (1356446531).

The spelling of 1151225020 in words is "one billion, one hundred fifty-one million, two hundred twenty-five thousand, twenty".