16622331525 has 18 divisors (see below), whose sum is σ = 29772443090. Its totient is φ = 8865243360.

The previous prime is 16622331463. The next prime is 16622331529. The reversal of 16622331525 is 52513322661.

16622331525 is a `hidden beast` number, since 1 + 6 + 622 + 3 + 3 + 1 + 5 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 718347204 + 15903984321 = 26802^2 + 126111^2 .

It is not a de Polignac number, because 16622331525 - 2⁸ = 16622331269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16622331525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16622331529) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36938290 + ... + 36938739.

Almost surely, 2^16622331525 is an apocalyptic number.

16622331525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16622331525 is a deficient number, since it is larger than the sum of its proper divisors (13150111565).

16622331525 is a wasteful number, since it uses less digits than its factorization.

16622331525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73877045 (or 73877037 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The spelling of 16622331525 in words is "sixteen billion, six hundred twenty-two million, three hundred thirty-one thousand, five hundred twenty-five".