1016663743225 has 12 divisors (see below), whose sum is σ = 1357637122156. Its totient is φ = 750767071680.

The previous prime is 1016663743213. The next prime is 1016663743247. The reversal of 1016663743225 is 5223473666101.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 35327833849 + 981335909376 = 187957^2 + 990624^2 .

It is not a de Polignac number, because 1016663743225 - 2¹⁵ = 1016663710457 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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, 1564097742 + ... + 1564098391.

Almost surely, 2^{1016663743225} is an apocalyptic number.

It is an amenable number.

1016663743225 is a deficient number, since it is larger than the sum of its proper divisors (340973378931).

1016663743225 is a wasteful number, since it uses less digits than its factorization.

1016663743225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128196156 (or 3128196151 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 1016663743225 in words is "one trillion, sixteen billion, six hundred sixty-three million, seven hundred forty-three thousand, two hundred twenty-five".