10161515725 has 12 divisors (see below), whose sum is σ = 12806843380. Its totient is φ = 7995945600.

The previous prime is 10161515711. The next prime is 10161515731. The reversal of 10161515725 is 52751516101.

It can be written as a sum of positive squares in 6 ways, for example, as 70509609 + 10091006116 = 8397^2 + 100454^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10161515725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3330120 + ... + 3333169.

Almost surely, 2^10161515725 is an apocalyptic number.

It is an amenable number.

10161515725 is a deficient number, since it is larger than the sum of its proper divisors (2645327655).

10161515725 is an equidigital number, since it uses as much as digits as its factorization.

10161515725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663360 (or 6663355 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 34.

The spelling of 10161515725 in words is "ten billion, one hundred sixty-one million, five hundred fifteen thousand, seven hundred twenty-five".