1252380621 has 8 divisors (see below), whose sum is σ = 1670051520. Its totient is φ = 834815072.

The previous prime is 1252380593. The next prime is 1252380637. The reversal of 1252380621 is 1260832521.

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 1252380621 - 2⁵ = 1252380589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252380121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7681 + ... + 50633.

It is an arithmetic number, because the mean of its divisors is an integer number (208756440).

Almost surely, 2^1252380621 is an apocalyptic number.

It is an amenable number.

1252380621 is a deficient number, since it is larger than the sum of its proper divisors (417670899).

1252380621 is an equidigital number, since it uses as much as digits as its factorization.

1252380621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52675.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1252380621 is about 35388.9901099198. The cubic root of 1252380621 is about 1077.9007636720.

The spelling of 1252380621 in words is "one billion, two hundred fifty-two million, three hundred eighty thousand, six hundred twenty-one".