1253444552001 has 6 divisors (see below), whose sum is σ = 1810531019570. Its totient is φ = 835629701328.

The previous prime is 1253444551979. The next prime is 1253444552023. The reversal of 1253444552001 is 1002554443521.

1253444552001 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 4 + 445 + 5 + 200 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1253444551979) and next prime (1253444552023).

It can be written as a sum of positive squares in only one way, i.e., 1153044292401 + 100400259600 = 1073799^2 + 316860^2 .

It is not a de Polignac number, because 1253444552001 - 2⁷ = 1253444551873 is a prime.

It is a super-2 number, since 2×1253444552001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253444552071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69635808436 + ... + 69635808453.

Almost surely, 2^{1253444552001} is an apocalyptic number.

It is an amenable number.

1253444552001 is a deficient number, since it is larger than the sum of its proper divisors (557086467569).

1253444552001 is a wasteful number, since it uses less digits than its factorization.

1253444552001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139271616895 (or 139271616892 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 1253444552001 its reverse (1002554443521), we get a palindrome (2255998995522).

The spelling of 1253444552001 in words is "one trillion, two hundred fifty-three billion, four hundred forty-four million, five hundred fifty-two thousand, one".