99426725 has 6 divisors (see below), whose sum is σ = 123289170. Its totient is φ = 79541360.

The previous prime is 99426721. The next prime is 99426731. The reversal of 99426725 is 52762499.

It can be written as a sum of positive squares in 3 ways, for example, as 27888961 + 71537764 = 5281^2 + 8458^2 .

It is not a de Polignac number, because 99426725 - 2² = 99426721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99426721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1988510 + ... + 1988559.

It is an arithmetic number, because the mean of its divisors is an integer number (20548195).

Almost surely, 2^99426725 is an apocalyptic number.

It is an amenable number.

99426725 is a deficient number, since it is larger than the sum of its proper divisors (23862445).

99426725 is a wasteful number, since it uses less digits than its factorization.

99426725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977079 (or 3977074 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 99426725 is about 9971.2950512960. The cubic root of 99426725 is about 463.2702140725.

The spelling of 99426725 in words is "ninety-nine million, four hundred twenty-six thousand, seven hundred twenty-five".