402625 has 8 divisors (see below), whose sum is σ = 502632. Its totient is φ = 322000.

The previous prime is 402613. The next prime is 402631. The reversal of 402625 is 526204.

It can be written as a sum of positive squares in 4 ways, for example, as 1936 + 400689 = 44^2 + 633^2 .

It is not a de Polignac number, because 402625 - 2⁵ = 402593 is a prime.

It is a d-powerful number, because it can be written as 4³ + 0 + 6⁵ + 2⁶ + 2¹² + 5⁸ .

It is a Duffinian number.

402625 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486 + ... + 1735.

It is an arithmetic number, because the mean of its divisors is an integer number (62829).

2⁴⁰²⁶²⁵ is an apocalyptic number.

It is an amenable number.

402625 is a deficient number, since it is larger than the sum of its proper divisors (100007).

402625 is an equidigital number, since it uses as much as digits as its factorization.

402625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 402625 is about 634.5273831759. The cubic root of 402625 is about 73.8414550574.

Adding to 402625 its reverse (526204), we get a palindrome (928829).

The spelling of 402625 in words is "four hundred two thousand, six hundred twenty-five".