9725515017413 has 8 divisors (see below), whose sum is σ = 10474885550808. Its totient is φ = 8976323625984.

The previous prime is 9725515017401. The next prime is 9725515017443. The reversal of 9725515017413 is 3147105155279.

9725515017413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1147540140289 + 8577974877124 = 1071233^2 + 2928818^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9725515017413 - 2⁸ = 9725515017157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9725515017443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44672720 + ... + 44889897.

It is an arithmetic number, because the mean of its divisors is an integer number (1309360693851).

Almost surely, 2^{9725515017413} is an apocalyptic number.

It is an amenable number.

9725515017413 is a deficient number, since it is larger than the sum of its proper divisors (749370533395).

9725515017413 is a wasteful number, since it uses less digits than its factorization.

9725515017413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89570983.

The product of its (nonzero) digits is 1323000, while the sum is 50.

The spelling of 9725515017413 in words is "nine trillion, seven hundred twenty-five billion, five hundred fifteen million, seventeen thousand, four hundred thirteen".