16731255525 has 12 divisors (see below), whose sum is σ = 27662342592. Its totient is φ = 8923336240.

The previous prime is 16731255521. The next prime is 16731255571. The reversal of 16731255525 is 52555213761.

It is not a de Polignac number, because 16731255525 - 2² = 16731255521 is a prime.

It is a super-2 number, since 2×16731255525² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16731255521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111541629 + ... + 111541778.

It is an arithmetic number, because the mean of its divisors is an integer number (2305195216).

Almost surely, 2^16731255525 is an apocalyptic number.

16731255525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16731255525 is a deficient number, since it is larger than the sum of its proper divisors (10931087067).

16731255525 is a wasteful number, since it uses less digits than its factorization.

16731255525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223083420 (or 223083415 counting only the distinct ones).

The product of its digits is 315000, while the sum is 42.

The spelling of 16731255525 in words is "sixteen billion, seven hundred thirty-one million, two hundred fifty-five thousand, five hundred twenty-five".