1520120256325 has 36 divisors (see below), whose sum is σ = 2072661653664. Its totient is φ = 1105128244000.

The previous prime is 1520120256323. The next prime is 1520120256349. The reversal of 1520120256325 is 5236520210251.

It is not a de Polignac number, because 1520120256325 - 2¹ = 1520120256323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520120256323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8108094 + ... + 8293456.

It is an arithmetic number, because the mean of its divisors is an integer number (57573934824).

Almost surely, 2^{1520120256325} is an apocalyptic number.

It is an amenable number.

1520120256325 is a deficient number, since it is larger than the sum of its proper divisors (552541397339).

1520120256325 is a wasteful number, since it uses less digits than its factorization.

1520120256325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188106 (or 188090 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 1520120256325 its reverse (5236520210251), we get a palindrome (6756640466576).

The spelling of 1520120256325 in words is "one trillion, five hundred twenty billion, one hundred twenty million, two hundred fifty-six thousand, three hundred twenty-five".