12150123421425 has 96 divisors (see below), whose sum is σ = 23503037137920. Its totient is φ = 5475617222400.

The previous prime is 12150123421421. The next prime is 12150123421459. The reversal of 12150123421425 is 52412432105121.

It is not a de Polignac number, because 12150123421425 - 2² = 12150123421421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12150123421421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6481749 + ... + 8143298.

It is an arithmetic number, because the mean of its divisors is an integer number (244823303520).

Almost surely, 2^{12150123421425} is an apocalyptic number.

12150123421425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12150123421425 is a deficient number, since it is larger than the sum of its proper divisors (11352913716495).

12150123421425 is a wasteful number, since it uses less digits than its factorization.

12150123421425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14625143 (or 14625138 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 12150123421425 its reverse (52412432105121), we get a palindrome (64562555526546).

It can be divided in two parts, 1215012 and 3421425, that multiplied together give a square (4157072432100 = 2038890²).

The spelling of 12150123421425 in words is "twelve trillion, one hundred fifty billion, one hundred twenty-three million, four hundred twenty-one thousand, four hundred twenty-five".