125439369 has 24 divisors (see below), whose sum is σ = 186987360. Its totient is φ = 74722560.

The previous prime is 125439367. The next prime is 125439371. The reversal of 125439369 is 963934521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125439367) and next prime (125439371).

It is not a de Polignac number, because 125439369 - 2¹ = 125439367 is a prime.

It is a super-2 number, since 2×125439369² = 31470070590236322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125439369.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125439367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18489 + ... + 24345.

It is an arithmetic number, because the mean of its divisors is an integer number (7791140).

Almost surely, 2^125439369 is an apocalyptic number.

It is an amenable number.

125439369 is a deficient number, since it is larger than the sum of its proper divisors (61547991).

125439369 is a wasteful number, since it uses less digits than its factorization.

125439369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941 (or 5930 counting only the distinct ones).

The product of its digits is 174960, while the sum is 42.

The square root of 125439369 is about 11199.9718303217. The cubic root of 125439369 is about 500.5851402879.

It can be divided in two parts, 12543 and 9369, that added together give a palindrome (21912).

The spelling of 125439369 in words is "one hundred twenty-five million, four hundred thirty-nine thousand, three hundred sixty-nine".