1216015145325 has 24 divisors (see below), whose sum is σ = 2233864860800. Its totient is φ = 648541410480.

The previous prime is 1216015145281. The next prime is 1216015145347. The reversal of 1216015145325 is 5235415106121.

1216015145325 is a `hidden beast` number, since 1 + 2 + 1 + 601 + 5 + 1 + 45 + 3 + 2 + 5 = 666.

It is not a de Polignac number, because 1216015145325 - 2⁷ = 1216015145197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1216015145325.

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, 900751285 + ... + 900752634.

Almost surely, 2^{1216015145325} is an apocalyptic number.

1216015145325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1216015145325 is a deficient number, since it is larger than the sum of its proper divisors (1017849715475).

1216015145325 is a wasteful number, since it uses less digits than its factorization.

1216015145325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801503938 (or 1801503927 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 1216015145325 in words is "one trillion, two hundred sixteen billion, fifteen million, one hundred forty-five thousand, three hundred twenty-five".