90425665 has 8 divisors (see below), whose sum is σ = 118375488. Its totient is φ = 65764080.

The previous prime is 90425663. The next prime is 90425747. The reversal of 90425665 is 56652409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90425665 - 2¹ = 90425663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90425663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821997 + ... + 822106.

It is an arithmetic number, because the mean of its divisors is an integer number (14796936).

Almost surely, 2^90425665 is an apocalyptic number.

It is an amenable number.

90425665 is a deficient number, since it is larger than the sum of its proper divisors (27949823).

90425665 is a wasteful number, since it uses less digits than its factorization.

90425665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644119.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 90425665 is about 9509.2410317543. The cubic root of 90425665 is about 448.8458737900.

It can be divided in two parts, 904 and 25665, that added together give a square (26569 = 163²).

The spelling of 90425665 in words is "ninety million, four hundred twenty-five thousand, six hundred sixty-five".