16610641260425 has 6 divisors (see below), whose sum is σ = 20597195162958. Its totient is φ = 13288513008320.

The previous prime is 16610641260419. The next prime is 16610641260463. The reversal of 16610641260425 is 52406214601661.

It can be written as a sum of positive squares in 3 ways, for example, as 3939006304249 + 12671634956176 = 1984693^2 + 3559724^2 .

It is not a de Polignac number, because 16610641260425 - 2¹² = 16610641256329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332212825184 + ... + 332212825233.

It is an arithmetic number, because the mean of its divisors is an integer number (3432865860493).

Almost surely, 2^{16610641260425} is an apocalyptic number.

It is an amenable number.

16610641260425 is a deficient number, since it is larger than the sum of its proper divisors (3986553902533).

16610641260425 is an equidigital number, since it uses as much as digits as its factorization.

16610641260425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664425650427 (or 664425650422 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 16610641260425 in words is "sixteen trillion, six hundred ten billion, six hundred forty-one million, two hundred sixty thousand, four hundred twenty-five".