90434225 has 24 divisors (see below), whose sum is σ = 129932160. Its totient is φ = 61153920.

The previous prime is 90434221. The next prime is 90434231. The reversal of 90434225 is 52243409.

It is not a de Polignac number, because 90434225 - 2² = 90434221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90434221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9236 + ... + 16314.

It is an arithmetic number, because the mean of its divisors is an integer number (5413840).

Almost surely, 2^90434225 is an apocalyptic number.

It is an amenable number.

90434225 is a deficient number, since it is larger than the sum of its proper divisors (39497935).

90434225 is a wasteful number, since it uses less digits than its factorization.

90434225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7169 (or 7164 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 90434225 is about 9509.6911095997. The cubic root of 90434225 is about 448.8600364338.

The spelling of 90434225 in words is "ninety million, four hundred thirty-four thousand, two hundred twenty-five".