16239925125 has 24 divisors (see below), whose sum is σ = 29275173720. Its totient is φ = 8661292800.

The previous prime is 16239925073. The next prime is 16239925183. The reversal of 16239925125 is 52152993261.

16239925125 is a `hidden beast` number, since 1 + 6 + 2 + 399 + 251 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5140459809 + 11099465316 = 71697^2 + 105354^2 .

It is not a de Polignac number, because 16239925125 - 2⁶ = 16239925061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7216620 + ... + 7218869.

It is an arithmetic number, because the mean of its divisors is an integer number (1219798905).

Almost surely, 2^16239925125 is an apocalyptic number.

16239925125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16239925125 is a deficient number, since it is larger than the sum of its proper divisors (13035248595).

16239925125 is a wasteful number, since it uses less digits than its factorization.

16239925125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14435510 (or 14435497 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The spelling of 16239925125 in words is "sixteen billion, two hundred thirty-nine million, nine hundred twenty-five thousand, one hundred twenty-five".