90257875 has 8 divisors (see below), whose sum is σ = 112641984. Its totient is φ = 72206200.

The previous prime is 90257873. The next prime is 90257899. The reversal of 90257875 is 57875209.

It is not a de Polignac number, because 90257875 - 2¹ = 90257873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90257873) 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, 360907 + ... + 361156.

It is an arithmetic number, because the mean of its divisors is an integer number (14080248).

Almost surely, 2^90257875 is an apocalyptic number.

90257875 is a deficient number, since it is larger than the sum of its proper divisors (22384109).

90257875 is an equidigital number, since it uses as much as digits as its factorization.

90257875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722078 (or 722068 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 90257875 is about 9500.4144646431. The cubic root of 90257875 is about 448.5680821584.

It can be divided in two parts, 9025 and 7875, that added together give a square (16900 = 130²).

The spelling of 90257875 in words is "ninety million, two hundred fifty-seven thousand, eight hundred seventy-five".