12154011252125 has 16 divisors (see below), whose sum is σ = 15168538585200. Its totient is φ = 9722995833600.

The previous prime is 12154011252107. The next prime is 12154011252133. The reversal of 12154011252125 is 52125211045121.

It can be written as a sum of positive squares in 8 ways, for example, as 2003275067641 + 10150736184484 = 1415371^2 + 3186022^2 .

It is not a de Polignac number, because 12154011252125 - 2³⁸ = 11879133345181 is a prime.

It is a super-2 number, since 2×12154011252125² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12154011252091 and 12154011252100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4786601 + ... + 6871649.

It is an arithmetic number, because the mean of its divisors is an integer number (948033661575).

Almost surely, 2^{12154011252125} is an apocalyptic number.

It is an amenable number.

12154011252125 is a deficient number, since it is larger than the sum of its proper divisors (3014527333075).

12154011252125 is an equidigital number, since it uses as much as digits as its factorization.

12154011252125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131697 (or 2131687 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 32.

Adding to 12154011252125 its reverse (52125211045121), we get a palindrome (64279222297246).

The spelling of 12154011252125 in words is "twelve trillion, one hundred fifty-four billion, eleven million, two hundred fifty-two thousand, one hundred twenty-five".