1615441325 has 24 divisors (see below), whose sum is σ = 2045447208. Its totient is φ = 1265172480.

The previous prime is 1615441319. The next prime is 1615441327. The reversal of 1615441325 is 5231445161.

It can be written as a sum of positive squares in 12 ways, for example, as 301161316 + 1314280009 = 17354^2 + 36253^2 .

It is not a de Polignac number, because 1615441325 - 2¹⁶ = 1615375789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1615441291 and 1615441300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615441327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 763469 + ... + 765581.

It is an arithmetic number, because the mean of its divisors is an integer number (85226967).

Almost surely, 2^1615441325 is an apocalyptic number.

It is an amenable number.

1615441325 is a deficient number, since it is larger than the sum of its proper divisors (430005883).

1615441325 is a wasteful number, since it uses less digits than its factorization.

1615441325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2748 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 1615441325 is about 40192.5531037778. The cubic root of 1615441325 is about 1173.3576148467.

Adding to 1615441325 its reverse (5231445161), we get a palindrome (6846886486).

The spelling of 1615441325 in words is "one billion, six hundred fifteen million, four hundred forty-one thousand, three hundred twenty-five".