125553503 has 16 divisors (see below), whose sum is σ = 132844800. Its totient is φ = 118506240.

The previous prime is 125553451. The next prime is 125553541. The reversal of 125553503 is 305355521.

It is a cyclic number.

It is not a de Polignac number, because 125553503 - 2²⁴ = 108776287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125553553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246413 + ... + 246921.

It is an arithmetic number, because the mean of its divisors is an integer number (8302800).

Almost surely, 2^125553503 is an apocalyptic number.

125553503 is a deficient number, since it is larger than the sum of its proper divisors (7291297).

125553503 is a wasteful number, since it uses less digits than its factorization.

125553503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 125553503 is about 11205.0659525056. The cubic root of 125553503 is about 500.7369173720.

The spelling of 125553503 in words is "one hundred twenty-five million, five hundred fifty-three thousand, five hundred three".