12150621825 has 24 divisors (see below), whose sum is σ = 20145981408. Its totient is φ = 6461959680.

The previous prime is 12150621817. The next prime is 12150621841. The reversal of 12150621825 is 52812605121.

It is not a de Polignac number, because 12150621825 - 2³ = 12150621817 is a prime.

It is a super-2 number, since 2×12150621825² (a number of 21 digits) contains 22 as substring.

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, 202999 + ... + 255948.

It is an arithmetic number, because the mean of its divisors is an integer number (839415892).

Almost surely, 2^12150621825 is an apocalyptic number.

12150621825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12150621825 is a deficient number, since it is larger than the sum of its proper divisors (7995359583).

12150621825 is a wasteful number, since it uses less digits than its factorization.

12150621825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459313 (or 459308 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 12150621825 in words is "twelve billion, one hundred fifty million, six hundred twenty-one thousand, eight hundred twenty-five".