1215560325 has 48 divisors (see below), whose sum is σ = 2300059136. Its totient is φ = 554904000.

The previous prime is 1215560267. The next prime is 1215560347. The reversal of 1215560325 is 5230655121.

It is a happy number.

1215560325 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1215560325 - 2⁸ = 1215560069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1215560292 and 1215560301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 550674 + ... + 552876.

Almost surely, 2^1215560325 is an apocalyptic number.

1215560325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1215560325 is a deficient number, since it is larger than the sum of its proper divisors (1084498811).

1215560325 is a wasteful number, since it uses less digits than its factorization.

1215560325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1215560325 is about 34864.8867056814. The cubic root of 1215560325 is about 1067.2320003959.

The spelling of 1215560325 in words is "one billion, two hundred fifteen million, five hundred sixty thousand, three hundred twenty-five".