126626502525 has 24 divisors (see below), whose sum is σ = 211004304384. Its totient is φ = 67002364800.

The previous prime is 126626502511. The next prime is 126626502547. The reversal of 126626502525 is 525205626621.

It is not a de Polignac number, because 126626502525 - 2⁵ = 126626502493 is a prime.

It is a super-2 number, since 2×126626502525² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6637536 + ... + 6656585.

It is an arithmetic number, because the mean of its divisors is an integer number (8791846016).

Almost surely, 2^126626502525 is an apocalyptic number.

126626502525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126626502525 is a deficient number, since it is larger than the sum of its proper divisors (84377801859).

126626502525 is a wasteful number, since it uses less digits than its factorization.

126626502525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13294261 (or 13294256 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 126626502525 in words is "one hundred twenty-six billion, six hundred twenty-six million, five hundred two thousand, five hundred twenty-five".