1820012325 has 48 divisors (see below), whose sum is σ = 3113657856. Its totient is φ = 937094400.

The previous prime is 1820012323. The next prime is 1820012329. The reversal of 1820012325 is 5232100281.

It is not a de Polignac number, because 1820012325 - 2¹ = 1820012323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1820012295 and 1820012304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820012323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1424587 + ... + 1425863.

It is an arithmetic number, because the mean of its divisors is an integer number (64867872).

Almost surely, 2^1820012325 is an apocalyptic number.

1820012325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1820012325 is a deficient number, since it is larger than the sum of its proper divisors (1293645531).

1820012325 is a wasteful number, since it uses less digits than its factorization.

1820012325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1820012325 is about 42661.6024663866. The cubic root of 1820012325 is about 1220.9319057757.

The spelling of 1820012325 in words is "one billion, eight hundred twenty million, twelve thousand, three hundred twenty-five".