320135134625 has 16 divisors (see below), whose sum is σ = 399562197840. Its totient is φ = 256086601600.

The previous prime is 320135134607. The next prime is 320135134643. The reversal of 320135134625 is 526431531023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320135134607) and next prime (320135134643).

It can be written as a sum of positive squares in 8 ways, for example, as 236632629601 + 83502505024 = 486449^2 + 288968^2 .

It is not a de Polignac number, because 320135134625 - 2¹² = 320135130529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1480421 + ... + 1682829.

It is an arithmetic number, because the mean of its divisors is an integer number (24972637365).

Almost surely, 2^320135134625 is an apocalyptic number.

It is an amenable number.

320135134625 is a deficient number, since it is larger than the sum of its proper divisors (79427063215).

320135134625 is a wasteful number, since it uses less digits than its factorization.

320135134625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215077 (or 215067 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 320135134625 its reverse (526431531023), we get a palindrome (846566665648).

The spelling of 320135134625 in words is "three hundred twenty billion, one hundred thirty-five million, one hundred thirty-four thousand, six hundred twenty-five".