125572639 has 8 divisors (see below), whose sum is σ = 130041360. Its totient is φ = 121113216.

The previous prime is 125572637. The next prime is 125572651. The reversal of 125572639 is 936275521.

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 125572639 - 2¹ = 125572637 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 (125572637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36247 + ... + 39559.

It is an arithmetic number, because the mean of its divisors is an integer number (16255170).

Almost surely, 2^125572639 is an apocalyptic number.

125572639 is a deficient number, since it is larger than the sum of its proper divisors (4468721).

125572639 is a wasteful number, since it uses less digits than its factorization.

125572639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649.

The product of its digits is 113400, while the sum is 40.

The square root of 125572639 is about 11205.9198194526. The cubic root of 125572639 is about 500.7623557035.

The spelling of 125572639 in words is "one hundred twenty-five million, five hundred seventy-two thousand, six hundred thirty-nine".