90617825 has 12 divisors (see below), whose sum is σ = 112484988. Its totient is φ = 72417600.

The previous prime is 90617789. The next prime is 90617827. The reversal of 90617825 is 52871609.

It can be written as a sum of positive squares in 6 ways, for example, as 614656 + 90003169 = 784^2 + 9487^2 .

It is not a de Polignac number, because 90617825 - 2²² = 86423521 is a prime.

It is a super-3 number, since 3×90617825³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90617827) 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, 41255 + ... + 43395.

It is an arithmetic number, because the mean of its divisors is an integer number (9373749).

Almost surely, 2^90617825 is an apocalyptic number.

It is an amenable number.

90617825 is a deficient number, since it is larger than the sum of its proper divisors (21867163).

90617825 is a wasteful number, since it uses less digits than its factorization.

90617825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844 (or 3839 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 90617825 is about 9519.3395254083. The cubic root of 90617825 is about 449.1635903715.

The spelling of 90617825 in words is "ninety million, six hundred seventeen thousand, eight hundred twenty-five".