1252206445 has 8 divisors (see below), whose sum is σ = 1717311744. Its totient is φ = 858655824.

The previous prime is 1252206433. The next prime is 1252206469. The reversal of 1252206445 is 5446022521.

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 1252206445 - 2⁵ = 1252206413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17888629 + ... + 17888698.

It is an arithmetic number, because the mean of its divisors is an integer number (214663968).

Almost surely, 2^1252206445 is an apocalyptic number.

It is an amenable number.

1252206445 is a deficient number, since it is larger than the sum of its proper divisors (465105299).

1252206445 is an equidigital number, since it uses as much as digits as its factorization.

1252206445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35777339.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1252206445 is about 35386.5291459900. The cubic root of 1252206445 is about 1077.8507913381.

Adding to 1252206445 its reverse (5446022521), we get a palindrome (6698228966).

The spelling of 1252206445 in words is "one billion, two hundred fifty-two million, two hundred six thousand, four hundred forty-five".