1249045855201 has 8 divisors (see below), whose sum is σ = 1253639539944. Its totient is φ = 1244452778880.

The previous prime is 1249045855193. The next prime is 1249045855207. The reversal of 1249045855201 is 1025585409421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101413587025 + 1147632268176 = 318455^2 + 1071276^2 .

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 1249045855201 - 2³ = 1249045855193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1249045855207) 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, 4188411 + ... + 4476703.

It is an arithmetic number, because the mean of its divisors is an integer number (156704942493).

Almost surely, 2^{1249045855201} is an apocalyptic number.

It is an amenable number.

1249045855201 is a deficient number, since it is larger than the sum of its proper divisors (4593684743).

1249045855201 is a wasteful number, since it uses less digits than its factorization.

1249045855201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304211.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 1249045855201 in words is "one trillion, two hundred forty-nine billion, forty-five million, eight hundred fifty-five thousand, two hundred one".