68099525 has 24 divisors (see below), whose sum is σ = 91363944. Its totient is φ = 50054400.

The previous prime is 68099513. The next prime is 68099531. The reversal of 68099525 is 52599086.

It can be written as a sum of positive squares in 12 ways, for example, as 38167684 + 29931841 = 6178^2 + 5471^2 .

It is not a de Polignac number, because 68099525 - 2⁴ = 68099509 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102695 + ... + 103355.

It is an arithmetic number, because the mean of its divisors is an integer number (3806831).

Almost surely, 2^68099525 is an apocalyptic number.

68099525 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68099525 is a deficient number, since it is larger than the sum of its proper divisors (23264419).

68099525 is a wasteful number, since it uses less digits than its factorization.

68099525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 68099525 is about 8252.2436343094. The cubic root of 68099525 is about 408.3645438683.

The spelling of 68099525 in words is "sixty-eight million, ninety-nine thousand, five hundred twenty-five".