138854655057525 has 48 divisors (see below), whose sum is σ = 250813237157568. Its totient is φ = 67224025024000.

The previous prime is 138854655057493. The next prime is 138854655057539. The reversal of 138854655057525 is 525750556458831.

It is not a de Polignac number, because 138854655057525 - 2⁵ = 138854655057493 is a prime.

It is a super-2 number, since 2×138854655057525² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138854655057525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123746256 + ... + 124863305.

It is an arithmetic number, because the mean of its divisors is an integer number (5225275774116).

Almost surely, 2^{138854655057525} is an apocalyptic number.

138854655057525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138854655057525 is a deficient number, since it is larger than the sum of its proper divisors (111958582100043).

138854655057525 is a wasteful number, since it uses less digits than its factorization.

138854655057525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248610262 (or 248610257 counting only the distinct ones).

The product of its (nonzero) digits is 1008000000, while the sum is 69.

The spelling of 138854655057525 in words is "one hundred thirty-eight trillion, eight hundred fifty-four billion, six hundred fifty-five million, fifty-seven thousand, five hundred twenty-five".