340725 has 48 divisors (see below), whose sum is σ = 714240. Its totient is φ = 139200.

The previous prime is 340723. The next prime is 340757. The reversal of 340725 is 527043.

It is a happy number.

340725 is a nontrivial binomial coefficient, being equal to C(826, 2).

It is not a de Polignac number, because 340725 - 2¹ = 340723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 3⁴ + 4⁹ + 7³ + 0 + 2⁵ + 5⁷ .

It is a Curzon number.

340725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5746 + ... + 5804.

It is an arithmetic number, because the mean of its divisors is an integer number (14880).

2³⁴⁰⁷²⁵ is an apocalyptic number.

340725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

340725 is the 825-th triangular number and also the 413-rd hexagonal number.

It is an amenable number.

340725 is an abundant number, since it is smaller than the sum of its proper divisors (373515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340725 is a wasteful number, since it uses less digits than its factorization.

340725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 340725 is about 583.7165407970. The cubic root of 340725 is about 69.8448946682.

Adding to 340725 its reverse (527043), we get a palindrome (867768).

The spelling of 340725 in words is "three hundred forty thousand, seven hundred twenty-five".