126431671306725 has 36 divisors (see below), whose sum is σ = 226453842934176. Its totient is φ = 67430024699040.

The previous prime is 126431671306553. The next prime is 126431671306741. The reversal of 126431671306725 is 527603176134621.

126431671306725 is a `hidden beast` number, since 1 + 2 + 6 + 431 + 6 + 7 + 130 + 6 + 72 + 5 = 666.

It is not a de Polignac number, because 126431671306725 - 2⁸ = 126431671306469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104994502 + ... + 106191848.

Almost surely, 2^{126431671306725} is an apocalyptic number.

126431671306725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126431671306725 is a deficient number, since it is larger than the sum of its proper divisors (100022171627451).

126431671306725 is a wasteful number, since it uses less digits than its factorization.

126431671306725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666666 (or 1666658 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 126431671306725 in words is "one hundred twenty-six trillion, four hundred thirty-one billion, six hundred seventy-one million, three hundred six thousand, seven hundred twenty-five".