16506146325 has 24 divisors (see below), whose sum is σ = 27318215808. Its totient is φ = 8794228480.

The previous prime is 16506146303. The next prime is 16506146333. The reversal of 16506146325 is 52364160561.

It is not a de Polignac number, because 16506146325 - 2²⁴ = 16489369109 is a prime.

It is a super-2 number, since 2×16506146325² (a number of 21 digits) contains 22 as substring.

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, 39357 + ... + 185906.

It is an arithmetic number, because the mean of its divisors is an integer number (1138258992).

Almost surely, 2^16506146325 is an apocalyptic number.

16506146325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16506146325 is a deficient number, since it is larger than the sum of its proper divisors (10812069483).

16506146325 is a wasteful number, since it uses less digits than its factorization.

16506146325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226253 (or 226248 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 16506146325 in words is "sixteen billion, five hundred six million, one hundred forty-six thousand, three hundred twenty-five".