1252404504144 has 60 divisors (see below), whose sum is σ = 3537750149856. Its totient is φ = 413566591296.

The previous prime is 1252404504101. The next prime is 1252404504151. The reversal of 1252404504144 is 4414054042521.

1252404504144 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 4 + 0 + 4 + 504 + 144 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1252404504099 and 1252404504108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40625964 + ... + 40656779.

Almost surely, 2^{1252404504144} is an apocalyptic number.

It is an amenable number.

1252404504144 is an abundant number, since it is smaller than the sum of its proper divisors (2285345645712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252404504144 is a wasteful number, since it uses less digits than its factorization.

1252404504144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81282864 (or 81282855 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 1252404504144 its reverse (4414054042521), we get a palindrome (5666458546665).

The spelling of 1252404504144 in words is "one trillion, two hundred fifty-two billion, four hundred four million, five hundred four thousand, one hundred forty-four".