20076821555125 has 16 divisors (see below), whose sum is σ = 25128080482752. Its totient is φ = 16015170589200.

The previous prime is 20076821555101. The next prime is 20076821555177. The reversal of 20076821555125 is 52155512867002.

It is a happy number.

It is not a de Polignac number, because 20076821555125 - 2⁷ = 20076821554997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231389727 + ... + 231476476.

It is an arithmetic number, because the mean of its divisors is an integer number (1570505030172).

Almost surely, 2^{20076821555125} is an apocalyptic number.

20076821555125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20076821555125 is a deficient number, since it is larger than the sum of its proper divisors (5051258927627).

20076821555125 is an equidigital number, since it uses as much as digits as its factorization.

20076821555125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462866565 (or 462866555 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 49.

The spelling of 20076821555125 in words is "twenty trillion, seventy-six billion, eight hundred twenty-one million, five hundred fifty-five thousand, one hundred twenty-five".