126326240166225 has 48 divisors (see below), whose sum is σ = 228200950704384. Its totient is φ = 61153830696000.

The previous prime is 126326240166221. The next prime is 126326240166239. The reversal of 126326240166225 is 522661042623621.

It is not a de Polignac number, because 126326240166225 - 2² = 126326240166221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126326240166221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118538511 + ... + 119599460.

It is an arithmetic number, because the mean of its divisors is an integer number (4754186473008).

Almost surely, 2^{126326240166225} is an apocalyptic number.

126326240166225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126326240166225 is a deficient number, since it is larger than the sum of its proper divisors (101874710538159).

126326240166225 is a wasteful number, since it uses less digits than its factorization.

126326240166225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238138638 (or 238138633 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 48.

Adding to 126326240166225 its reverse (522661042623621), we get a palindrome (648987282789846).

It can be divided in two parts, 126326240 and 166225, that added together give a triangular number (126492465 = T₁₅₉₀₅).

The spelling of 126326240166225 in words is "one hundred twenty-six trillion, three hundred twenty-six billion, two hundred forty million, one hundred sixty-six thousand, two hundred twenty-five".