138025724249 has 8 divisors (see below), whose sum is σ = 158561011200. Its totient is φ = 117694768896.

The previous prime is 138025724197. The next prime is 138025724299. The reversal of 138025724249 is 942427520831.

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 138025724249 - 2¹⁶ = 138025658713 is a prime.

It is a super-2 number, since 2×138025724249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138025724299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51081449 + ... + 51084150.

It is an arithmetic number, because the mean of its divisors is an integer number (19820126400).

Almost surely, 2^138025724249 is an apocalyptic number.

It is an amenable number.

138025724249 is a deficient number, since it is larger than the sum of its proper divisors (20535286951).

138025724249 is a wasteful number, since it uses less digits than its factorization.

138025724249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102165799.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 138025724249 in words is "one hundred thirty-eight billion, twenty-five million, seven hundred twenty-four thousand, two hundred forty-nine".