1440828725655 has 32 divisors (see below), whose sum is σ = 2518250001408. Its totient is φ = 697653360000.

The previous prime is 1440828725639. The next prime is 1440828725663. The reversal of 1440828725655 is 5565278280441.

It is a happy number.

It is not a de Polignac number, because 1440828725655 - 2⁴ = 1440828725639 is a prime.

It is a super-2 number, since 2×1440828725655² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1440828725595 and 1440828725604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5689864 + ... + 5937693.

It is an arithmetic number, because the mean of its divisors is an integer number (78695312544).

Almost surely, 2^{1440828725655} is an apocalyptic number.

1440828725655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1440828725655 is a deficient number, since it is larger than the sum of its proper divisors (1077421275753).

1440828725655 is a wasteful number, since it uses less digits than its factorization.

1440828725655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11628327.

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 1440828725655 in words is "one trillion, four hundred forty billion, eight hundred twenty-eight million, seven hundred twenty-five thousand, six hundred fifty-five".