125726553 has 24 divisors (see below), whose sum is σ = 196596000. Its totient is φ = 79400088.

The previous prime is 125726537. The next prime is 125726599. The reversal of 125726553 is 355627521.

It is not a de Polignac number, because 125726553 - 2⁴ = 125726537 is a prime.

It is a super-2 number, since 2×125726553² = 31614332258523618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125726053) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3298 + ... + 16196.

It is an arithmetic number, because the mean of its divisors is an integer number (8191500).

Almost surely, 2^125726553 is an apocalyptic number.

It is an amenable number.

125726553 is a deficient number, since it is larger than the sum of its proper divisors (70869447).

125726553 is a wasteful number, since it uses less digits than its factorization.

125726553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12946 (or 12921 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 125726553 is about 11212.7852472078. The cubic root of 125726553 is about 500.9668664667.

The spelling of 125726553 in words is "one hundred twenty-five million, seven hundred twenty-six thousand, five hundred fifty-three".