905125321 has 12 divisors (see below), whose sum is σ = 947470080. Its totient is φ = 863771040.

The previous prime is 905125303. The next prime is 905125349. The reversal of 905125321 is 123521509.

It is not a de Polignac number, because 905125321 - 2⁵ = 905125289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 905125321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905125421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162460 + ... + 167938.

It is an arithmetic number, because the mean of its divisors is an integer number (78955840).

Almost surely, 2^905125321 is an apocalyptic number.

It is an amenable number.

905125321 is a deficient number, since it is larger than the sum of its proper divisors (42344759).

905125321 is an equidigital number, since it uses as much as digits as its factorization.

905125321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656 (or 5583 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 905125321 is about 30085.3007463778. The cubic root of 905125321 is about 967.3186731828.

The spelling of 905125321 in words is "nine hundred five million, one hundred twenty-five thousand, three hundred twenty-one".