20725755409080 has 48 divisors (see below), whose sum is σ = 67358705080680. Its totient is φ = 5526868108992.

The previous prime is 20725755409063. The next prime is 20725755409109. The reversal of 20725755409080 is 8090455752702.

20725755409080 is a `hidden beast` number, since 2 + 0 + 7 + 2 + 5 + 7 + 5 + 540 + 90 + 8 + 0 = 666.

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, 28785771042 + ... + 28785771761.

Almost surely, 2^{20725755409080} is an apocalyptic number.

20725755409080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20725755409080 is an abundant number, since it is smaller than the sum of its proper divisors (46632949671600).

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

20725755409080 is a wasteful number, since it uses less digits than its factorization.

20725755409080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57571542820 (or 57571542813 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

The spelling of 20725755409080 in words is "twenty trillion, seven hundred twenty-five billion, seven hundred fifty-five million, four hundred nine thousand, eighty".