1425516581181 has 32 divisors (see below), whose sum is σ = 2369796249600. Its totient is φ = 740494860480.

The previous prime is 1425516581171. The next prime is 1425516581207. The reversal of 1425516581181 is 1811856155241.

It is not a de Polignac number, because 1425516581181 - 2³¹ = 1423369097533 is a prime.

It is a super-2 number, since 2×1425516581181² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1425516581181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425516581171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5519155 + ... + 5771663.

It is an arithmetic number, because the mean of its divisors is an integer number (74056132800).

Almost surely, 2^{1425516581181} is an apocalyptic number.

1425516581181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1425516581181 is a deficient number, since it is larger than the sum of its proper divisors (944279668419).

1425516581181 is a wasteful number, since it uses less digits than its factorization.

1425516581181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276969.

The product of its digits is 384000, while the sum is 48.

The spelling of 1425516581181 in words is "one trillion, four hundred twenty-five billion, five hundred sixteen million, five hundred eighty-one thousand, one hundred eighty-one".