402725 has 12 divisors (see below), whose sum is σ = 507780. Its totient is φ = 316800.

The previous prime is 402697. The next prime is 402739. The reversal of 402725 is 527204.

It can be written as a sum of positive squares in 6 ways, for example, as 146689 + 256036 = 383^2 + 506^2 .

It is not a de Polignac number, because 402725 - 2¹⁶ = 337189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402697 and 402706.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402725.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2135 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (42315).

2⁴⁰²⁷²⁵ is an apocalyptic number.

It is an amenable number.

402725 is a deficient number, since it is larger than the sum of its proper divisors (105055).

402725 is a wasteful number, since it uses less digits than its factorization.

402725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 402725 is about 634.6061770894. The cubic root of 402725 is about 73.8475678871.

Adding to 402725 its reverse (527204), we get a palindrome (929929).

The spelling of 402725 in words is "four hundred two thousand, seven hundred twenty-five".