1151500320225 has 18 divisors (see below), whose sum is σ = 2062465018406. Its totient is φ = 614133504000.

The previous prime is 1151500320149. The next prime is 1151500320263. The reversal of 1151500320225 is 5220230051511.

1151500320225 is a `hidden beast` number, since 1 + 151 + 500 + 3 + 2 + 0 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 15843508641 + 1135656811584 = 125871^2 + 1065672^2 .

It is not a de Polignac number, because 1151500320225 - 2⁹ = 1151500319713 is a prime.

It is a super-3 number, since 3×1151500320225³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2558889376 + ... + 2558889825.

Almost surely, 2^{1151500320225} is an apocalyptic number.

1151500320225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151500320225 is a deficient number, since it is larger than the sum of its proper divisors (910964698181).

1151500320225 is a wasteful number, since it uses less digits than its factorization.

1151500320225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117779217 (or 5117779209 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 1151500320225 its reverse (5220230051511), we get a palindrome (6371730371736).

The spelling of 1151500320225 in words is "one trillion, one hundred fifty-one billion, five hundred million, three hundred twenty thousand, two hundred twenty-five".