8999525 has 6 divisors (see below), whose sum is σ = 11159442. Its totient is φ = 7199600.

The previous prime is 8999519. The next prime is 8999527. The reversal of 8999525 is 5259998.

It can be written as a sum of positive squares in 3 ways, for example, as 1779556 + 7219969 = 1334^2 + 2687^2 .

It is not a de Polignac number, because 8999525 - 2⁶ = 8999461 is a prime.

It is a d-powerful number, because it can be written as 8⁴ + 9² + 9⁵ + 9⁶ + 5⁴ + 2²³ + 5⁶ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8999525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999527) 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, 179966 + ... + 180015.

It is an arithmetic number, because the mean of its divisors is an integer number (1859907).

Almost surely, 2^8999525 is an apocalyptic number.

It is an amenable number.

8999525 is a deficient number, since it is larger than the sum of its proper divisors (2159917).

8999525 is a wasteful number, since it uses less digits than its factorization.

8999525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359991 (or 359986 counting only the distinct ones).

The product of its digits is 291600, while the sum is 47.

The square root of 8999525 is about 2999.9208322887. The cubic root of 8999525 is about 208.0047228341.

The spelling of 8999525 in words is "eight million, nine hundred ninety-nine thousand, five hundred twenty-five".