542725 has 12 divisors (see below), whose sum is σ = 713124. Its totient is φ = 408320.

The previous prime is 542723. The next prime is 542747. The reversal of 542725 is 527245.

It can be written as a sum of positive squares in 6 ways, for example, as 3969 + 538756 = 63^2 + 734^2 .

It is not a de Polignac number, because 542725 - 2¹ = 542723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a d-powerful number, because it can be written as 5³ + 4⁶ + 7⁵ + 2¹⁶ + 2¹⁶ + 5⁸ .

It is a Duffinian number.

542725 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 542725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (59427).

2⁵⁴²⁷²⁵ is an apocalyptic number.

It is an amenable number.

542725 is a deficient number, since it is larger than the sum of its proper divisors (170399).

542725 is a wasteful number, since it uses less digits than its factorization.

542725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1299 counting only the distinct ones).

The product of its digits is 2800, while the sum is 25.

The square root of 542725 is about 736.6987172515. The cubic root of 542725 is about 81.5692762875.

The spelling of 542725 in words is "five hundred forty-two thousand, seven hundred twenty-five".