151225213 has 4 divisors (see below), whose sum is σ = 151253020. Its totient is φ = 151197408.

The previous prime is 151225187. The next prime is 151225219. The reversal of 151225213 is 312522151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135559449 + 15665764 = 11643^2 + 3958^2 .

It is a cyclic number.

It is not a de Polignac number, because 151225213 - 2⁵ = 151225181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151225219) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2778 + ... + 17611.

It is an arithmetic number, because the mean of its divisors is an integer number (37813255).

Almost surely, 2^151225213 is an apocalyptic number.

It is an amenable number.

151225213 is a deficient number, since it is larger than the sum of its proper divisors (27807).

151225213 is an equidigital number, since it uses as much as digits as its factorization.

151225213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27806.

The product of its digits is 600, while the sum is 22.

The square root of 151225213 is about 12297.3661001045. The cubic root of 151225213 is about 532.7720114680.

Adding to 151225213 its reverse (312522151), we get a palindrome (463747364).

The spelling of 151225213 in words is "one hundred fifty-one million, two hundred twenty-five thousand, two hundred thirteen".