125307503 has 4 divisors (see below), whose sum is σ = 125426448. Its totient is φ = 125188560.

The previous prime is 125307443. The next prime is 125307517. The reversal of 125307503 is 305703521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125307503 - 2²² = 121113199 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 (125307583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57878 + ... + 60003.

It is an arithmetic number, because the mean of its divisors is an integer number (31356612).

Almost surely, 2^125307503 is an apocalyptic number.

125307503 is a deficient number, since it is larger than the sum of its proper divisors (118945).

125307503 is a wasteful number, since it uses less digits than its factorization.

125307503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118944.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 125307503 is about 11194.0833925784. The cubic root of 125307503 is about 500.4096682522.

The spelling of 125307503 in words is "one hundred twenty-five million, three hundred seven thousand, five hundred three".