15725158021073 has 2 divisors, whose sum is σ = 15725158021074. Its totient is φ = 15725158021072.

The previous prime is 15725158021031. The next prime is 15725158021213. The reversal of 15725158021073 is 37012085152751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8522096463169 + 7203061557904 = 2919263^2 + 2683852^2 .

It is an emirp because it is prime and its reverse (37012085152751) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15725158021073 is a prime.

It is not a weakly prime, because it can be changed into another prime (15725158021973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7862579010536 + 7862579010537.

It is an arithmetic number, because the mean of its divisors is an integer number (7862579010537).

Almost surely, 2^{15725158021073} is an apocalyptic number.

It is an amenable number.

15725158021073 is a deficient number, since it is larger than the sum of its proper divisors (1).

15725158021073 is an equidigital number, since it uses as much as digits as its factorization.

15725158021073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588000, while the sum is 47.

The spelling of 15725158021073 in words is "fifteen trillion, seven hundred twenty-five billion, one hundred fifty-eight million, twenty-one thousand, seventy-three".