90312152225 has 12 divisors (see below), whose sum is σ = 113095854780. Its totient is φ = 71534376000.

The previous prime is 90312152221. The next prime is 90312152317. The reversal of 90312152225 is 52225121309.

It can be written as a sum of positive squares in 6 ways, for example, as 20809793536 + 69502358689 = 144256^2 + 263633^2 .

It is not a de Polignac number, because 90312152225 - 2² = 90312152221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90312152191 and 90312152200.

It is not an unprimeable number, because it can be changed into a prime (90312152221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17881070 + ... + 17886119.

It is an arithmetic number, because the mean of its divisors is an integer number (9424654565).

Almost surely, 2^90312152225 is an apocalyptic number.

It is an amenable number.

90312152225 is a deficient number, since it is larger than the sum of its proper divisors (22783702555).

90312152225 is a wasteful number, since it uses less digits than its factorization.

90312152225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35767300 (or 35767295 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 90312152225 in words is "ninety billion, three hundred twelve million, one hundred fifty-two thousand, two hundred twenty-five".