16219913925 has 12 divisors (see below), whose sum is σ = 26816924480. Its totient is φ = 8650620720.

The previous prime is 16219913909. The next prime is 16219913929. The reversal of 16219913925 is 52931991261.

It is not a de Polignac number, because 16219913925 - 2⁴ = 16219913909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16219913929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108132685 + ... + 108132834.

Almost surely, 2^16219913925 is an apocalyptic number.

16219913925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16219913925 is a deficient number, since it is larger than the sum of its proper divisors (10597010555).

16219913925 is a wasteful number, since it uses less digits than its factorization.

16219913925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216265532 (or 216265527 counting only the distinct ones).

The product of its digits is 262440, while the sum is 48.

The spelling of 16219913925 in words is "sixteen billion, two hundred nineteen million, nine hundred thirteen thousand, nine hundred twenty-five".