90193325 has 18 divisors (see below), whose sum is σ = 113560254. Its totient is φ = 71061120.

The previous prime is 90193297. The next prime is 90193343. The reversal of 90193325 is 52339109.

It can be written as a sum of positive squares in 9 ways, for example, as 1136356 + 89056969 = 1066^2 + 9437^2 .

It is not a de Polignac number, because 90193325 - 2⁶ = 90193261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90193291 and 90193300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 132887 + ... + 133563.

It is an arithmetic number, because the mean of its divisors is an integer number (6308903).

Almost surely, 2^90193325 is an apocalyptic number.

It is an amenable number.

90193325 is a deficient number, since it is larger than the sum of its proper divisors (23366929).

90193325 is an equidigital number, since it uses as much as digits as its factorization.

90193325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 90193325 is about 9497.0166368181. The cubic root of 90193325 is about 448.4611220545.

The spelling of 90193325 in words is "ninety million, one hundred ninety-three thousand, three hundred twenty-five".