12146745525 has 24 divisors (see below), whose sum is σ = 20085779904. Its totient is φ = 6477244800.

The previous prime is 12146745461. The next prime is 12146745539. The reversal of 12146745525 is 52554764121.

It is not a de Polignac number, because 12146745525 - 2⁶ = 12146745461 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 898617 + ... + 912033.

It is an arithmetic number, because the mean of its divisors is an integer number (836907496).

Almost surely, 2^12146745525 is an apocalyptic number.

12146745525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12146745525 is a deficient number, since it is larger than the sum of its proper divisors (7939034379).

12146745525 is a wasteful number, since it uses less digits than its factorization.

12146745525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25501 (or 25496 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The spelling of 12146745525 in words is "twelve billion, one hundred forty-six million, seven hundred forty-five thousand, five hundred twenty-five".