125115503 has 8 divisors (see below), whose sum is σ = 127575408. Its totient is φ = 122675904.

The previous prime is 125115499. The next prime is 125115511. The reversal of 125115503 is 305511521.

It is a happy number.

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 125115503 - 2² = 125115499 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 (125115553) by changing a digit.

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, 7676 + ... + 17582.

It is an arithmetic number, because the mean of its divisors is an integer number (15946926).

Almost surely, 2^125115503 is an apocalyptic number.

125115503 is a deficient number, since it is larger than the sum of its proper divisors (2459905).

125115503 is an equidigital number, since it uses as much as digits as its factorization.

125115503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10153.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 125115503 is about 11185.5041459918. The cubic root of 125115503 is about 500.1539565899.

The spelling of 125115503 in words is "one hundred twenty-five million, one hundred fifteen thousand, five hundred three".