125204065749 has 48 divisors (see below), whose sum is σ = 217631764480. Its totient is φ = 67758625440.

The previous prime is 125204065717. The next prime is 125204065751. The reversal of 125204065749 is 947560402521.

125204065749 is a `hidden beast` number, since 12 + 5 + 20 + 40 + 6 + 574 + 9 = 666.

It is not a de Polignac number, because 125204065749 - 2⁵ = 125204065717 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 (125204055749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4331904 + ... + 4360710.

Almost surely, 2^125204065749 is an apocalyptic number.

125204065749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

125204065749 is a deficient number, since it is larger than the sum of its proper divisors (92427698731).

125204065749 is a wasteful number, since it uses less digits than its factorization.

125204065749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32470 (or 32467 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 125204065749 in words is "one hundred twenty-five billion, two hundred four million, sixty-five thousand, seven hundred forty-nine".