99776825 has 12 divisors (see below), whose sum is σ = 131001660. Its totient is φ = 75125760.

The previous prime is 99776759. The next prime is 99776837. The reversal of 99776825 is 52867799.

It can be written as a sum of positive squares in 6 ways, for example, as 2399401 + 97377424 = 1549^2 + 9868^2 .

It is not a de Polignac number, because 99776825 - 2¹⁶ = 99711289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116960 + ... + 117809.

It is an arithmetic number, because the mean of its divisors is an integer number (10916805).

Almost surely, 2^99776825 is an apocalyptic number.

It is an amenable number.

99776825 is a deficient number, since it is larger than the sum of its proper divisors (31224835).

99776825 is a wasteful number, since it uses less digits than its factorization.

99776825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234796 (or 234791 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The square root of 99776825 is about 9988.8350171579. The cubic root of 99776825 is about 463.8133306419.

The spelling of 99776825 in words is "ninety-nine million, seven hundred seventy-six thousand, eight hundred twenty-five".