1252345505 has 8 divisors (see below), whose sum is σ = 1528286400. Its totient is φ = 984895216.

The previous prime is 1252345489. The next prime is 1252345517. The reversal of 1252345505 is 5055432521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252345505 - 2⁴ = 1252345489 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2122325 + ... + 2122914.

It is an arithmetic number, because the mean of its divisors is an integer number (191035800).

Almost surely, 2^1252345505 is an apocalyptic number.

It is an amenable number.

1252345505 is a deficient number, since it is larger than the sum of its proper divisors (275940895).

1252345505 is an equidigital number, since it uses as much as digits as its factorization.

1252345505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245303.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1252345505 is about 35388.4939634339. The cubic root of 1252345505 is about 1077.8906890146.

The spelling of 1252345505 in words is "one billion, two hundred fifty-two million, three hundred forty-five thousand, five hundred five".