16257125489 has 32 divisors (see below), whose sum is σ = 19057766400. Its totient is φ = 13834626960.

The previous prime is 16257125473. The next prime is 16257125491. The reversal of 16257125489 is 98452175261.

It is not a de Polignac number, because 16257125489 - 2⁴ = 16257125473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16257125389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1433162 + ... + 1444460.

It is an arithmetic number, because the mean of its divisors is an integer number (595555200).

Almost surely, 2^16257125489 is an apocalyptic number.

It is an amenable number.

16257125489 is a deficient number, since it is larger than the sum of its proper divisors (2800640911).

16257125489 is a wasteful number, since it uses less digits than its factorization.

16257125489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402 (or 11380 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The spelling of 16257125489 in words is "sixteen billion, two hundred fifty-seven million, one hundred twenty-five thousand, four hundred eighty-nine".