1252204815 has 32 divisors (see below), whose sum is σ = 2035547136. Its totient is φ = 657233280.

The previous prime is 1252204787. The next prime is 1252204817. The reversal of 1252204815 is 5184022521.

It is not a de Polignac number, because 1252204815 - 2⁵ = 1252204783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252204817) 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 31 ways as a sum of consecutive naturals, for example, 343050 + ... + 346680.

It is an arithmetic number, because the mean of its divisors is an integer number (63610848).

Almost surely, 2^1252204815 is an apocalyptic number.

1252204815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1252204815 is a deficient number, since it is larger than the sum of its proper divisors (783342321).

1252204815 is a wasteful number, since it uses less digits than its factorization.

1252204815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 1252204815 is about 35386.5061146195. The cubic root of 1252204815 is about 1077.8503236576.

The spelling of 1252204815 in words is "one billion, two hundred fifty-two million, two hundred four thousand, eight hundred fifteen".