20101405440125 has 96 divisors (see below), whose sum is σ = 28081439717760. Its totient is φ = 14323345920000.

The previous prime is 20101405440071. The next prime is 20101405440167. The reversal of 20101405440125 is 52104450410102.

It is a happy number.

It is not a de Polignac number, because 20101405440125 - 2³⁰ = 20100331698301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 666455045 + ... + 666485205.

It is an arithmetic number, because the mean of its divisors is an integer number (292514997060).

Almost surely, 2^{20101405440125} is an apocalyptic number.

20101405440125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20101405440125 is a deficient number, since it is larger than the sum of its proper divisors (7980034277635).

20101405440125 is a wasteful number, since it uses less digits than its factorization.

20101405440125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31200 (or 31173 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 20101405440125 its reverse (52104450410102), we get a palindrome (72205855850227).

The spelling of 20101405440125 in words is "twenty trillion, one hundred one billion, four hundred five million, four hundred forty thousand, one hundred twenty-five".