125009637 has 4 divisors (see below), whose sum is σ = 166679520. Its totient is φ = 83339756.

The previous prime is 125009609. The next prime is 125009663. The reversal of 125009637 is 736900521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125009637 - 2⁷ = 125009509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125009598 and 125009607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125004637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20834937 + ... + 20834942.

It is an arithmetic number, because the mean of its divisors is an integer number (41669880).

Almost surely, 2^125009637 is an apocalyptic number.

It is an amenable number.

125009637 is a deficient number, since it is larger than the sum of its proper divisors (41669883).

125009637 is an equidigital number, since it uses as much as digits as its factorization.

125009637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41669882.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 125009637 is about 11180.7708589345. The cubic root of 125009637 is about 500.0128490031.

The spelling of 125009637 in words is "one hundred twenty-five million, nine thousand, six hundred thirty-seven".