10156542125 has 8 divisors (see below), whose sum is σ = 12675364728. Its totient is φ = 8125233600.

The previous prime is 10156542103. The next prime is 10156542157. The reversal of 10156542125 is 52124565101.

It can be written as a sum of positive squares in 4 ways, for example, as 1747684 + 10154794441 = 1322^2 + 100771^2 .

It is not a de Polignac number, because 10156542125 - 2²⁰ = 10155493549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10156542091 and 10156542100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40626044 + ... + 40626293.

It is an arithmetic number, because the mean of its divisors is an integer number (1584420591).

Almost surely, 2^10156542125 is an apocalyptic number.

It is an amenable number.

10156542125 is a deficient number, since it is larger than the sum of its proper divisors (2518822603).

10156542125 is an frugal number, since it uses more digits than its factorization.

10156542125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81252352 (or 81252342 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 10156542125 in words is "ten billion, one hundred fifty-six million, five hundred forty-two thousand, one hundred twenty-five".