16542947625 has 32 divisors (see below), whose sum is σ = 27580425600. Its totient is φ = 8805931200.

The previous prime is 16542947599. The next prime is 16542947647. The reversal of 16542947625 is 52674924561.

It is a happy number.

It is not a de Polignac number, because 16542947625 - 2⁷ = 16542947497 is a prime.

It is a super-2 number, since 2×16542947625² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153951 + ... + 238299.

It is an arithmetic number, because the mean of its divisors is an integer number (861888300).

Almost surely, 2^16542947625 is an apocalyptic number.

16542947625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16542947625 is a deficient number, since it is larger than the sum of its proper divisors (11037477975).

16542947625 is an equidigital number, since it uses as much as digits as its factorization.

16542947625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84890 (or 84880 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 51.

The spelling of 16542947625 in words is "sixteen billion, five hundred forty-two million, nine hundred forty-seven thousand, six hundred twenty-five".