139533825 has 24 divisors (see below), whose sum is σ = 231880000. Its totient is φ = 74036160.

The previous prime is 139533811. The next prime is 139533827. The reversal of 139533825 is 528335931.

It is not a de Polignac number, because 139533825 - 2⁹ = 139533313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139533827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10251 + ... + 19599.

Almost surely, 2^139533825 is an apocalyptic number.

139533825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139533825 is a deficient number, since it is larger than the sum of its proper divisors (92346175).

139533825 is a wasteful number, since it uses less digits than its factorization.

139533825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9561 (or 9556 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The square root of 139533825 is about 11812.4436506592. The cubic root of 139533825 is about 518.6724333629.

The spelling of 139533825 in words is "one hundred thirty-nine million, five hundred thirty-three thousand, eight hundred twenty-five".