90425 has 6 divisors (see below), whose sum is σ = 112158. Its totient is φ = 72320.

The previous prime is 90407. The next prime is 90437. The reversal of 90425 is 52409.

It can be written as a sum of positive squares in 3 ways, for example, as 1024 + 89401 = 32^2 + 299^2 .

It is not a de Polignac number, because 90425 - 2¹⁶ = 24889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90397 and 90406.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1784 + ... + 1833.

It is an arithmetic number, because the mean of its divisors is an integer number (18693).

2⁹⁰⁴²⁵ is an apocalyptic number.

It is an amenable number.

90425 is a deficient number, since it is larger than the sum of its proper divisors (21733).

90425 is a wasteful number, since it uses less digits than its factorization.

90425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 90425 is about 300.7074990751. The cubic root of 90425 is about 44.8844773500.

It can be divided in two parts, 904 and 25, that added together give a palindrome (929).

The spelling of 90425 in words is "ninety thousand, four hundred twenty-five".