16145413525 has 6 divisors (see below), whose sum is σ = 20020312802. Its totient is φ = 12916330800.

The previous prime is 16145413463. The next prime is 16145413547. The reversal of 16145413525 is 52531454161.

It can be written as a sum of positive squares in 3 ways, for example, as 364275396 + 15781138129 = 19086^2 + 125623^2 .

It is not a de Polignac number, because 16145413525 - 2¹⁹ = 16144889237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322908246 + ... + 322908295.

Almost surely, 2^16145413525 is an apocalyptic number.

It is an amenable number.

16145413525 is a deficient number, since it is larger than the sum of its proper divisors (3874899277).

16145413525 is an equidigital number, since it uses as much as digits as its factorization.

16145413525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645816551 (or 645816546 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

Adding to 16145413525 its reverse (52531454161), we get a palindrome (68676867686).

The spelling of 16145413525 in words is "sixteen billion, one hundred forty-five million, four hundred thirteen thousand, five hundred twenty-five".