126165212320425 has 24 divisors (see below), whose sum is σ = 208593677632320. Its totient is φ = 67287943368000.

The previous prime is 126165212320423. The next prime is 126165212320429. The reversal of 126165212320425 is 524023212561621.

It is not a de Polignac number, because 126165212320425 - 2¹ = 126165212320423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126165212320421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31259031 + ... + 35063619.

It is an arithmetic number, because the mean of its divisors is an integer number (8691403234680).

Almost surely, 2^{126165212320425} is an apocalyptic number.

126165212320425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126165212320425 is a deficient number, since it is larger than the sum of its proper divisors (82428465311895).

126165212320425 is a wasteful number, since it uses less digits than its factorization.

126165212320425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246753 (or 4246748 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 126165212320425 in words is "one hundred twenty-six trillion, one hundred sixty-five billion, two hundred twelve million, three hundred twenty thousand, four hundred twenty-five".