125553520 has 40 divisors (see below), whose sum is σ = 307279440. Its totient is φ = 47577600.

The previous prime is 125553451. The next prime is 125553541. The reversal of 125553520 is 25355521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39781 + ... + 42820.

It is an arithmetic number, because the mean of its divisors is an integer number (7681986).

Almost surely, 2^125553520 is an apocalyptic number.

125553520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125553520 is an abundant number, since it is smaller than the sum of its proper divisors (181725920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125553520 is a wasteful number, since it uses less digits than its factorization.

125553520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82633 (or 82627 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 125553520 is about 11205.0667110910. The cubic root of 125553520 is about 500.7369399720.

The spelling of 125553520 in words is "one hundred twenty-five million, five hundred fifty-three thousand, five hundred twenty".