1151972225 has 12 divisors (see below), whose sum is σ = 1455399036. Its totient is φ = 904188480.

The previous prime is 1151972219. The next prime is 1151972257. The reversal of 1151972225 is 5222791511.

1151972225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 74097664 + 1077874561 = 8608^2 + 32831^2 .

It is not a de Polignac number, because 1151972225 - 2⁶ = 1151972161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433382 + ... + 436031.

It is an arithmetic number, because the mean of its divisors is an integer number (121283253).

Almost surely, 2^1151972225 is an apocalyptic number.

It is an amenable number.

1151972225 is a deficient number, since it is larger than the sum of its proper divisors (303426811).

1151972225 is an equidigital number, since it uses as much as digits as its factorization.

1151972225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869476 (or 869471 counting only the distinct ones).

The product of its digits is 12600, while the sum is 35.

The square root of 1151972225 is about 33940.7163300953. The cubic root of 1151972225 is about 1048.2881327209.

The spelling of 1151972225 in words is "one billion, one hundred fifty-one million, nine hundred seventy-two thousand, two hundred twenty-five".