99417825 has 72 divisors (see below), whose sum is σ = 196680120. Its totient is φ = 47692800.

The previous prime is 99417811. The next prime is 99417839. The reversal of 99417825 is 52871499.

It is an interprime number because it is at equal distance from previous prime (99417811) and next prime (99417839).

It can be written as a sum of positive squares in 12 ways, for example, as 68013009 + 31404816 = 8247^2 + 5604^2 .

It is not a de Polignac number, because 99417825 - 2⁷ = 99417697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 119511 + ... + 120339.

Almost surely, 2^99417825 is an apocalyptic number.

99417825 is the 5330-th nonagonal number.

It is an amenable number.

99417825 is a deficient number, since it is larger than the sum of its proper divisors (97262295).

99417825 is a wasteful number, since it uses less digits than its factorization.

99417825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 891 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 99417825 is about 9970.8487602611. The cubic root of 99417825 is about 463.2563907337.

It can be divided in two parts, 9941 and 7825, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 99417825 in words is "ninety-nine million, four hundred seventeen thousand, eight hundred twenty-five".