68824899025 has 27 divisors (see below), whose sum is σ = 86679109083. Its totient is φ = 54210970800.

The previous prime is 68824898959. The next prime is 68824899037. The reversal of 68824899025 is 52099842886.

The square root of 68824899025 is 262345.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24776963649 + 44047935376 = 157407^2 + 209876^2 .

It is not a de Polignac number, because 68824899025 - 2¹³ = 68824890833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 93132106 + ... + 93132844.

Almost surely, 2^68824899025 is an apocalyptic number.

68824899025 is the 262345-th square number.

68824899025 is the 131173-rd centered octagonal number.

It is an amenable number.

68824899025 is a deficient number, since it is larger than the sum of its proper divisors (17854210058).

68824899025 is an frugal number, since it uses more digits than its factorization.

68824899025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 68824899025 in words is "sixty-eight billion, eight hundred twenty-four million, eight hundred ninety-nine thousand, twenty-five".