90025784 has 16 divisors (see below), whose sum is σ = 170833320. Its totient is φ = 44470240.

The previous prime is 90025783. The next prime is 90025849. The reversal of 90025784 is 48752009.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90025783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67127 + ... + 68454.

Almost surely, 2^90025784 is an apocalyptic number.

It is an amenable number.

90025784 is a deficient number, since it is larger than the sum of its proper divisors (80807536).

90025784 is a wasteful number, since it uses less digits than its factorization.

90025784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135670 (or 135666 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 90025784 is about 9488.1918193089. The cubic root of 90025784 is about 448.1832663251.

It can be divided in two parts, 90025 and 784, that added together give a palindrome (90809).

The spelling of 90025784 in words is "ninety million, twenty-five thousand, seven hundred eighty-four".