16906500625 has 45 divisors (see below), whose sum is σ = 24608685981. Its totient is φ = 11577426000.

The previous prime is 16906500577. The next prime is 16906500641. The reversal of 16906500625 is 52600560961.

The square root of 16906500625 is 130025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1325469649 + 15581030976 = 36407^2 + 124824^2 .

It is not a de Polignac number, because 16906500625 - 2²³ = 16898112017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 22754004 + ... + 22754746.

Almost surely, 2^16906500625 is an apocalyptic number.

16906500625 is the 130025-th square number.

16906500625 is the 65013-rd centered octagonal number.

It is an amenable number.

16906500625 is a deficient number, since it is larger than the sum of its proper divisors (7702185356).

16906500625 is an frugal number, since it uses more digits than its factorization.

16906500625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 16906500625 in words is "sixteen billion, nine hundred six million, five hundred thousand, six hundred twenty-five".