20354657642725 has 48 divisors (see below), whose sum is σ = 29088964080000. Its totient is φ = 13839824793600.

The previous prime is 20354657642707. The next prime is 20354657642731. The reversal of 20354657642725 is 52724675645302.

It is not a de Polignac number, because 20354657642725 - 2⁹ = 20354657642213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20354657642725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28277889 + ... + 28988761.

It is an arithmetic number, because the mean of its divisors is an integer number (606020085000).

Almost surely, 2^{20354657642725} is an apocalyptic number.

20354657642725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20354657642725 is a deficient number, since it is larger than the sum of its proper divisors (8734306437275).

20354657642725 is a wasteful number, since it uses less digits than its factorization.

20354657642725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712270 (or 712265 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 58.

The spelling of 20354657642725 in words is "twenty trillion, three hundred fifty-four billion, six hundred fifty-seven million, six hundred forty-two thousand, seven hundred twenty-five".