1151015225 has 6 divisors (see below), whose sum is σ = 1427258910. Its totient is φ = 920812160.

The previous prime is 1151015221. The next prime is 1151015233. The reversal of 1151015225 is 5225101511.

It can be written as a sum of positive squares in 3 ways, for example, as 346555456 + 804459769 = 18616^2 + 28363^2 .

It is not a de Polignac number, because 1151015225 - 2² = 1151015221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1151015225.

It is not an unprimeable number, because it can be changed into a prime (1151015221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23020280 + ... + 23020329.

It is an arithmetic number, because the mean of its divisors is an integer number (237876485).

Almost surely, 2^1151015225 is an apocalyptic number.

It is an amenable number.

1151015225 is a deficient number, since it is larger than the sum of its proper divisors (276243685).

1151015225 is an equidigital number, since it uses as much as digits as its factorization.

1151015225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46040619 (or 46040614 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1151015225 is about 33926.6152894744. The cubic root of 1151015225 is about 1047.9977641237.

Adding to 1151015225 its reverse (5225101511), we get a palindrome (6376116736).

The spelling of 1151015225 in words is "one billion, one hundred fifty-one million, fifteen thousand, two hundred twenty-five".