125469639 has 18 divisors (see below), whose sum is σ = 192525840. Its totient is φ = 78724416.

The previous prime is 125469613. The next prime is 125469677. The reversal of 125469639 is 936964521.

125469639 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 6 + 9 + 639 = 666.

It is not a de Polignac number, because 125469639 - 2⁷ = 125469511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125469594 and 125469603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125469139) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21519 + ... + 26720.

It is an arithmetic number, because the mean of its divisors is an integer number (10695880).

Almost surely, 2^125469639 is an apocalyptic number.

125469639 is a deficient number, since it is larger than the sum of its proper divisors (67056201).

125469639 is a wasteful number, since it uses less digits than its factorization.

125469639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48279 (or 48259 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 125469639 is about 11201.3230914924. The cubic root of 125469639 is about 500.6254027500.

The spelling of 125469639 in words is "one hundred twenty-five million, four hundred sixty-nine thousand, six hundred thirty-nine".