1252303155 has 24 divisors (see below), whose sum is σ = 2173775760. Its totient is φ = 666936000.

The previous prime is 1252303123. The next prime is 1252303159. The reversal of 1252303155 is 5513032521.

It is a happy number.

It is not a de Polignac number, because 1252303155 - 2⁵ = 1252303123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252303159) 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 23 ways as a sum of consecutive naturals, for example, 12280 + ... + 51530.

It is an arithmetic number, because the mean of its divisors is an integer number (90573990).

Almost surely, 2^1252303155 is an apocalyptic number.

1252303155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1252303155 is a deficient number, since it is larger than the sum of its proper divisors (921472605).

1252303155 is a wasteful number, since it uses less digits than its factorization.

1252303155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39971 (or 39968 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1252303155 is about 35387.8956000495. The cubic root of 1252303155 is about 1077.8785386975.

Adding to 1252303155 its reverse (5513032521), we get a palindrome (6765335676).

The spelling of 1252303155 in words is "one billion, two hundred fifty-two million, three hundred three thousand, one hundred fifty-five".