16051623025 has 9 divisors (see below), whose sum is σ = 19904798091. Its totient is φ = 12840791640.

The previous prime is 16051623017. The next prime is 16051623043. The reversal of 16051623025 is 52032615061.

The square root of 16051623025 is 126695.

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

It can be written as a sum of positive squares in only one way, i.e., 5778584289 + 10273038736 = 76017^2 + 101356^2 .

It is not a de Polignac number, because 16051623025 - 2³ = 16051623017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 620806 + ... + 646144.

Almost surely, 2^16051623025 is an apocalyptic number.

16051623025 is the 126695-th square number.

16051623025 is the 63348-th centered octagonal number.

It is an amenable number.

16051623025 is a deficient number, since it is larger than the sum of its proper divisors (3853175066).

16051623025 is an frugal number, since it uses more digits than its factorization.

16051623025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50688 (or 25344 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 16051623025 in words is "sixteen billion, fifty-one million, six hundred twenty-three thousand, twenty-five".