20354776220225 has 12 divisors (see below), whose sum is σ = 25241095875696. Its totient is φ = 16283063968080.

The previous prime is 20354776220201. The next prime is 20354776220293. The reversal of 20354776220225 is 52202267745302.

It is not a de Polignac number, because 20354776220225 - 2¹⁰ = 20354776219201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20354776220225.

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, 18376367 + ... + 19452516.

It is an arithmetic number, because the mean of its divisors is an integer number (2103424656308).

Almost surely, 2^{20354776220225} is an apocalyptic number.

20354776220225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20354776220225 is a deficient number, since it is larger than the sum of its proper divisors (4886319655471).

20354776220225 is a wasteful number, since it uses less digits than its factorization.

20354776220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37850416 (or 37850411 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 47.

The spelling of 20354776220225 in words is "twenty trillion, three hundred fifty-four billion, seven hundred seventy-six million, two hundred twenty thousand, two hundred twenty-five".