16535032425 has 36 divisors (see below), whose sum is σ = 29626657840. Its totient is φ = 8815534560.

The previous prime is 16535032417. The next prime is 16535032427. The reversal of 16535032425 is 52423053561.

16535032425 is a `hidden beast` number, since 1 + 65 + 350 + 3 + 242 + 5 = 666.

It is not a de Polignac number, because 16535032425 - 2³ = 16535032417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16535032425.

It is not an unprimeable number, because it can be changed into a prime (16535032427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 705546 + ... + 728604.

Almost surely, 2^16535032425 is an apocalyptic number.

16535032425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16535032425 is a deficient number, since it is larger than the sum of its proper divisors (13091625415).

16535032425 is a wasteful number, since it uses less digits than its factorization.

16535032425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26262 (or 26254 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 16535032425 its reverse (52423053561), we get a palindrome (68958085986).

The spelling of 16535032425 in words is "sixteen billion, five hundred thirty-five million, thirty-two thousand, four hundred twenty-five".