9090725 has 36 divisors (see below), whose sum is σ = 13506948. Its totient is φ = 6048000.

The previous prime is 9090703. The next prime is 9090749. The reversal of 9090725 is 5270909.

9090725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4351396 + 4739329 = 2086^2 + 2177^2 .

It is not a de Polignac number, because 9090725 - 2¹⁰ = 9089701 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 9090691 and 9090700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50135 + ... + 50315.

It is an arithmetic number, because the mean of its divisors is an integer number (375193).

Almost surely, 2^9090725 is an apocalyptic number.

It is an amenable number.

9090725 is a deficient number, since it is larger than the sum of its proper divisors (4416223).

9090725 is a wasteful number, since it uses less digits than its factorization.

9090725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 9090725 is about 3015.0829175994. The cubic root of 9090725 is about 208.7049934646.

The spelling of 9090725 in words is "nine million, ninety thousand, seven hundred twenty-five".