16725663390 has 16 divisors (see below), whose sum is σ = 40141592208. Its totient is φ = 4460176896.

The previous prime is 16725663347. The next prime is 16725663403. The reversal of 16725663390 is 9336652761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278761027 + ... + 278761086.

It is an arithmetic number, because the mean of its divisors is an integer number (2508849513).

Almost surely, 2^16725663390 is an apocalyptic number.

16725663390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16725663390 is an abundant number, since it is smaller than the sum of its proper divisors (23415928818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16725663390 is a wasteful number, since it uses less digits than its factorization.

16725663390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557522123.

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 16725663390 in words is "sixteen billion, seven hundred twenty-five million, six hundred sixty-three thousand, three hundred ninety".