125553501 has 24 divisors (see below), whose sum is σ = 191480640. Its totient is φ = 79056000.

The previous prime is 125553451. The next prime is 125553541. The reversal of 125553501 is 105355521.

125553501 is a `hidden beast` number, since 125 + 5 + 535 + 0 + 1 = 666.

It is not a de Polignac number, because 125553501 - 2⁶ = 125553437 is a prime.

It is a super-2 number, since 2×125553501² = 31527363226714002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125553541) 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, 67656 + ... + 69486.

It is an arithmetic number, because the mean of its divisors is an integer number (7978360).

Almost surely, 2^125553501 is an apocalyptic number.

It is an amenable number.

125553501 is a deficient number, since it is larger than the sum of its proper divisors (65927139).

125553501 is a wasteful number, since it uses less digits than its factorization.

125553501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 125553501 is about 11205.0658632602. The cubic root of 125553501 is about 500.7369147132.

It can be divided in two parts, 1255 and 53501, that added together give a square (54756 = 234²).

The spelling of 125553501 in words is "one hundred twenty-five million, five hundred fifty-three thousand, five hundred one".