16875787240225 has 9 divisors (see below), whose sum is σ = 20926001647603. Its totient is φ = 13500613360120.

The previous prime is 16875787240223. The next prime is 16875787240261. The reversal of 16875787240225 is 52204278757861.

The square root of 16875787240225 is 4108015.

It is a perfect power (a square), and thus also a powerful number.

16875787240225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6075283406481 + 10800503833744 = 2464809^2 + 3286412^2 .

It is not a de Polignac number, because 16875787240225 - 2¹ = 16875787240223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16875787240223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20129274 + ... + 20950876.

Almost surely, 2^{16875787240225} is an apocalyptic number.

16875787240225 is the 4108015-th square number.

16875787240225 is the 2054008-th centered octagonal number.

It is an amenable number.

16875787240225 is a deficient number, since it is larger than the sum of its proper divisors (4050214407378).

16875787240225 is an frugal number, since it uses more digits than its factorization.

16875787240225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643216 (or 821608 counting only the distinct ones).

The product of its (nonzero) digits is 105369600, while the sum is 64.

The spelling of 16875787240225 in words is "sixteen trillion, eight hundred seventy-five billion, seven hundred eighty-seven million, two hundred forty thousand, two hundred twenty-five".