1825085321 has 4 divisors (see below), whose sum is σ = 1828896000. Its totient is φ = 1821274644.

The previous prime is 1825085309. The next prime is 1825085323. The reversal of 1825085321 is 1235805281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1235805281 = 9461 ⋅130621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1825085321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1825085323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1904621 + ... + 1905578.

It is an arithmetic number, because the mean of its divisors is an integer number (457224000).

Almost surely, 2^1825085321 is an apocalyptic number.

It is an amenable number.

1825085321 is a deficient number, since it is larger than the sum of its proper divisors (3810679).

1825085321 is an equidigital number, since it uses as much as digits as its factorization.

1825085321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810678.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1825085321 is about 42721.0173216884. The cubic root of 1825085321 is about 1222.0652381813.

The spelling of 1825085321 in words is "one billion, eight hundred twenty-five million, eighty-five thousand, three hundred twenty-one".