1215626325 has 48 divisors (see below), whose sum is σ = 2047488000. Its totient is φ = 636292800.

The previous prime is 1215626317. The next prime is 1215626339. The reversal of 1215626325 is 5236265121.

It is not a de Polignac number, because 1215626325 - 2³ = 1215626317 is a prime.

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, 1178560 + ... + 1179590.

It is an arithmetic number, because the mean of its divisors is an integer number (42656000).

Almost surely, 2^1215626325 is an apocalyptic number.

1215626325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1215626325 is a deficient number, since it is larger than the sum of its proper divisors (831861675).

1215626325 is a wasteful number, since it uses less digits than its factorization.

1215626325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1317 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 1215626325 is about 34865.8332038688. The cubic root of 1215626325 is about 1067.2513155040.

The spelling of 1215626325 in words is "one billion, two hundred fifteen million, six hundred twenty-six thousand, three hundred twenty-five".