126400001525 has 12 divisors (see below), whose sum is σ = 179126859552. Its totient is φ = 86674286640.

The previous prime is 126400001473. The next prime is 126400001549. The reversal of 126400001525 is 525100004621.

It is not a de Polignac number, because 126400001525 - 2¹⁴ = 126399985141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 126400001494 and 126400001503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361142687 + ... + 361143036.

It is an arithmetic number, because the mean of its divisors is an integer number (14927238296).

Almost surely, 2^126400001525 is an apocalyptic number.

It is an amenable number.

126400001525 is a deficient number, since it is larger than the sum of its proper divisors (52726858027).

126400001525 is an equidigital number, since it uses as much as digits as its factorization.

126400001525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722285740 (or 722285735 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 126400001525 in words is "one hundred twenty-six billion, four hundred million, one thousand, five hundred twenty-five".