16219296025 has 9 divisors (see below), whose sum is σ = 20112716703. Its totient is φ = 12974927400.

The previous prime is 16219296017. The next prime is 16219296031. The reversal of 16219296025 is 52069291261.

The square root of 16219296025 is 127355.

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., 5838946569 + 10380349456 = 76413^2 + 101884^2 .

It is not a de Polignac number, because 16219296025 - 2³ = 16219296017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 624040 + ... + 649510.

Almost surely, 2^16219296025 is an apocalyptic number.

16219296025 is the 127355-th square number.

16219296025 is the 63678-th centered octagonal number.

It is an amenable number.

16219296025 is a deficient number, since it is larger than the sum of its proper divisors (3893420678).

16219296025 is an frugal number, since it uses more digits than its factorization.

16219296025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50952 (or 25476 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 16219296025 in words is "sixteen billion, two hundred nineteen million, two hundred ninety-six thousand, twenty-five".