1021620325 has 24 divisors (see below), whose sum is σ = 1442068416. Its totient is φ = 710688000.

The previous prime is 1021620319. The next prime is 1021620377. The reversal of 1021620325 is 5230261201.

1021620325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021620325 - 2³ = 1021620317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021620296 and 1021620305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74436 + ... + 87085.

It is an arithmetic number, because the mean of its divisors is an integer number (60086184).

Almost surely, 2^1021620325 is an apocalyptic number.

It is an amenable number.

1021620325 is a deficient number, since it is larger than the sum of its proper divisors (420448091).

1021620325 is a wasteful number, since it uses less digits than its factorization.

1021620325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161565 (or 161560 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1021620325 is about 31962.7959509177. The cubic root of 1021620325 is about 1007.1554523803.

Adding to 1021620325 its reverse (5230261201), we get a palindrome (6251881526).

The spelling of 1021620325 in words is "one billion, twenty-one million, six hundred twenty thousand, three hundred twenty-five".