125027639 has 16 divisors (see below), whose sum is σ = 144840960. Its totient is φ = 106661760.

The previous prime is 125027633. The next prime is 125027641. The reversal of 125027639 is 936720521.

It is a cyclic number.

It is not a de Polignac number, because 125027639 - 2¹² = 125023543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125027599 and 125027608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125027633) 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 15 ways as a sum of consecutive naturals, for example, 81332 + ... + 82854.

It is an arithmetic number, because the mean of its divisors is an integer number (9052560).

Almost surely, 2^125027639 is an apocalyptic number.

125027639 is a deficient number, since it is larger than the sum of its proper divisors (19813321).

125027639 is a wasteful number, since it uses less digits than its factorization.

125027639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 125027639 is about 11181.5758728365. The cubic root of 125027639 is about 500.0368492842.

The spelling of 125027639 in words is "one hundred twenty-five million, twenty-seven thousand, six hundred thirty-nine".