99147725 has 12 divisors (see below), whose sum is σ = 123194496. Its totient is φ = 79156080.

The previous prime is 99147721. The next prime is 99147749. The reversal of 99147725 is 52774199.

It is not a de Polignac number, because 99147725 - 2² = 99147721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99147721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9284 + ... + 16866.

It is an arithmetic number, because the mean of its divisors is an integer number (10266208).

Almost surely, 2^99147725 is an apocalyptic number.

It is an amenable number.

99147725 is a deficient number, since it is larger than the sum of its proper divisors (24046771).

99147725 is a wasteful number, since it uses less digits than its factorization.

99147725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8116 (or 8111 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The square root of 99147725 is about 9957.2950644239. The cubic root of 99147725 is about 462.8364826777.

The spelling of 99147725 in words is "ninety-nine million, one hundred forty-seven thousand, seven hundred twenty-five".