16541662525 has 6 divisors (see below), whose sum is σ = 20511661562. Its totient is φ = 13233330000.

The previous prime is 16541662519. The next prime is 16541662531. The reversal of 16541662525 is 52526614561.

It is an interprime number because it is at equal distance from previous prime (16541662519) and next prime (16541662531).

It can be written as a sum of positive squares in 3 ways, for example, as 4995945124 + 11545717401 = 70682^2 + 107451^2 .

It is not a de Polignac number, because 16541662525 - 2⁵ = 16541662493 is a prime.

It is a Duffinian number.

It is a congruent 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, 330833226 + ... + 330833275.

Almost surely, 2^16541662525 is an apocalyptic number.

It is an amenable number.

16541662525 is a deficient number, since it is larger than the sum of its proper divisors (3969999037).

16541662525 is an equidigital number, since it uses as much as digits as its factorization.

16541662525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661666511 (or 661666506 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The spelling of 16541662525 in words is "sixteen billion, five hundred forty-one million, six hundred sixty-two thousand, five hundred twenty-five".