125000027639 has 4 divisors (see below), whose sum is σ = 125025982224. Its totient is φ = 124974073056.

The previous prime is 125000027627. The next prime is 125000027689. The reversal of 125000027639 is 936720000521.

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 125000027639 - 2⁴ = 125000027623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125000027599 and 125000027608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125000027689) 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, 12970067 + ... + 12979700.

It is an arithmetic number, because the mean of its divisors is an integer number (31256495556).

Almost surely, 2^125000027639 is an apocalyptic number.

125000027639 is a deficient number, since it is larger than the sum of its proper divisors (25954585).

125000027639 is an equidigital number, since it uses as much as digits as its factorization.

125000027639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25954584.

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

The spelling of 125000027639 in words is "one hundred twenty-five billion, twenty-seven thousand, six hundred thirty-nine".