155125005321213 has 12 divisors (see below), whose sum is σ = 224776295832348. Its totient is φ = 103090434659520.

The previous prime is 155125005321203. The next prime is 155125005321277. The reversal of 155125005321213 is 312123500521551.

155125005321213 is a `hidden beast` number, since 1 + 5 + 51 + 2 + 50 + 0 + 532 + 1 + 21 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70594578635364 + 84530426685849 = 8402058^2 + 9194043^2 .

It is not a de Polignac number, because 155125005321213 - 2³⁰ = 155123931579389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155125005321203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27186293208 + ... + 27186298913.

It is an arithmetic number, because the mean of its divisors is an integer number (18731357986029).

Almost surely, 2^{155125005321213} is an apocalyptic number.

It is an amenable number.

155125005321213 is a deficient number, since it is larger than the sum of its proper divisors (69651290511135).

155125005321213 is a wasteful number, since it uses less digits than its factorization.

155125005321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54372592444 (or 54372592441 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 155125005321213 its reverse (312123500521551), we get a palindrome (467248505842764).

The spelling of 155125005321213 in words is "one hundred fifty-five trillion, one hundred twenty-five billion, five million, three hundred twenty-one thousand, two hundred thirteen".