16721460525 has 288 divisors, whose sum is σ = 37627020288. Its totient is φ = 6360883200.

The previous prime is 16721460521. The next prime is 16721460533. The reversal of 16721460525 is 52506412761.

It is not a de Polignac number, because 16721460525 - 2² = 16721460521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16721460521) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 71765809 + ... + 71766041.

It is an arithmetic number, because the mean of its divisors is an integer number (130649376).

Almost surely, 2^16721460525 is an apocalyptic number.

16721460525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16721460525 is an abundant number, since it is smaller than the sum of its proper divisors (20905559763).

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

16721460525 is a wasteful number, since it uses less digits than its factorization.

16721460525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 16721460525 in words is "sixteen billion, seven hundred twenty-one million, four hundred sixty thousand, five hundred twenty-five".