139166639025 has 12 divisors (see below), whose sum is σ = 230088843312. Its totient is φ = 74222207440.

The previous prime is 139166639023. The next prime is 139166639039. The reversal of 139166639025 is 520936661931.

It is a happy number.

139166639025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139166639025 - 2¹ = 139166639023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139166639023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 927777519 + ... + 927777668.

It is an arithmetic number, because the mean of its divisors is an integer number (19174070276).

Almost surely, 2^139166639025 is an apocalyptic number.

139166639025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139166639025 is a deficient number, since it is larger than the sum of its proper divisors (90922204287).

139166639025 is a wasteful number, since it uses less digits than its factorization.

139166639025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855555200 (or 1855555195 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 51.

The spelling of 139166639025 in words is "one hundred thirty-nine billion, one hundred sixty-six million, six hundred thirty-nine thousand, twenty-five".