139952625 has 16 divisors (see below), whose sum is σ = 232881792. Its totient is φ = 74641200.

The previous prime is 139952623. The next prime is 139952633. The reversal of 139952625 is 526259931.

It is not a de Polignac number, because 139952625 - 2¹ = 139952623 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139952623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186229 + ... + 186978.

It is an arithmetic number, because the mean of its divisors is an integer number (14555112).

Almost surely, 2^139952625 is an apocalyptic number.

139952625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139952625 is a deficient number, since it is larger than the sum of its proper divisors (92929167).

139952625 is an equidigital number, since it uses as much as digits as its factorization.

139952625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373225 (or 373215 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 139952625 is about 11830.1574376675. The cubic root of 139952625 is about 519.1908334801.

The spelling of 139952625 in words is "one hundred thirty-nine million, nine hundred fifty-two thousand, six hundred twenty-five".