16553877625 has 16 divisors (see below), whose sum is σ = 20891379600. Its totient is φ = 13094294400.

The previous prime is 16553877601. The next prime is 16553877629. The reversal of 16553877625 is 52677835561.

It can be written as a sum of positive squares in 8 ways, for example, as 12698585344 + 3855292281 = 112688^2 + 62091^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16553877625 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16553877629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732870 + ... + 755119.

It is an arithmetic number, because the mean of its divisors is an integer number (1305711225).

Almost surely, 2^16553877625 is an apocalyptic number.

It is an amenable number.

16553877625 is a deficient number, since it is larger than the sum of its proper divisors (4337501975).

16553877625 is an equidigital number, since it uses as much as digits as its factorization.

16553877625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488093 (or 1488083 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 55.

The spelling of 16553877625 in words is "sixteen billion, five hundred fifty-three million, eight hundred seventy-seven thousand, six hundred twenty-five".