125523503 has 8 divisors (see below), whose sum is σ = 145887360. Its totient is φ = 105767640.

The previous prime is 125523491. The next prime is 125523521. The reversal of 125523503 is 305325521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125523503 - 2⁶ = 125523439 is a prime.

It is a super-3 number, since 3×125523503³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125523403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151553 + ... + 152378.

It is an arithmetic number, because the mean of its divisors is an integer number (18235920).

Almost surely, 2^125523503 is an apocalyptic number.

125523503 is a deficient number, since it is larger than the sum of its proper divisors (20363857).

125523503 is an equidigital number, since it uses as much as digits as its factorization.

125523503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303997.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 125523503 is about 11203.7271923231. The cubic root of 125523503 is about 500.6970318417.

The spelling of 125523503 in words is "one hundred twenty-five million, five hundred twenty-three thousand, five hundred three".