125553424 has 10 divisors (see below), whose sum is σ = 243259790. Its totient is φ = 62776704.

The previous prime is 125553409. The next prime is 125553431. The reversal of 125553424 is 424355521.

It can be written as a sum of positive squares in only one way, i.e., 102819600 + 22733824 = 10140^2 + 4768^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3923529 + ... + 3923560.

It is an arithmetic number, because the mean of its divisors is an integer number (24325979).

Almost surely, 2^125553424 is an apocalyptic number.

It is an amenable number.

125553424 is a deficient number, since it is larger than the sum of its proper divisors (117706366).

125553424 is an equidigital number, since it uses as much as digits as its factorization.

125553424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7847097 (or 7847091 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 125553424 is about 11205.0624273138. The cubic root of 125553424 is about 500.7368123484.

The spelling of 125553424 in words is "one hundred twenty-five million, five hundred fifty-three thousand, four hundred twenty-four".