126378912525 has 12 divisors (see below), whose sum is σ = 208946468832. Its totient is φ = 67402086640.

The previous prime is 126378912481. The next prime is 126378912557. The reversal of 126378912525 is 525219873621.

It is not a de Polignac number, because 126378912525 - 2¹⁰ = 126378911501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 842526009 + ... + 842526158.

It is an arithmetic number, because the mean of its divisors is an integer number (17412205736).

Almost surely, 2^126378912525 is an apocalyptic number.

126378912525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126378912525 is a deficient number, since it is larger than the sum of its proper divisors (82567556307).

126378912525 is a wasteful number, since it uses less digits than its factorization.

126378912525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685052180 (or 1685052175 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The spelling of 126378912525 in words is "one hundred twenty-six billion, three hundred seventy-eight million, nine hundred twelve thousand, five hundred twenty-five".