1253807485841 has 4 divisors (see below), whose sum is σ = 1253832467184. Its totient is φ = 1253782504500.

The previous prime is 1253807485837. The next prime is 1253807485871. The reversal of 1253807485841 is 1485847083521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1253807485841 - 2² = 1253807485837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253807485811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12415235 + ... + 12515816.

It is an arithmetic number, because the mean of its divisors is an integer number (313458116796).

Almost surely, 2^{1253807485841} is an apocalyptic number.

It is an amenable number.

1253807485841 is a deficient number, since it is larger than the sum of its proper divisors (24981343).

1253807485841 is an equidigital number, since it uses as much as digits as its factorization.

1253807485841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24981342.

The product of its (nonzero) digits is 8601600, while the sum is 56.

The spelling of 1253807485841 in words is "one trillion, two hundred fifty-three billion, eight hundred seven million, four hundred eighty-five thousand, eight hundred forty-one".