139725 has 36 divisors (see below), whose sum is σ = 270816. Its totient is φ = 71280.

The previous prime is 139721. The next prime is 139729. The reversal of 139725 is 527931.

It is an interprime number because it is at equal distance from previous prime (139721) and next prime (139729).

It is not a de Polignac number, because 139725 - 2² = 139721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6064 + ... + 6086.

2¹³⁹⁷²⁵ is an apocalyptic number.

139725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139725 is a deficient number, since it is larger than the sum of its proper divisors (131091).

139725 is an equidigital number, since it uses as much as digits as its factorization.

139725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 31 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 139725 is about 373.7980738313. The cubic root of 139725 is about 51.8909202600.

The spelling of 139725 in words is "one hundred thirty-nine thousand, seven hundred twenty-five".