425690 has 8 divisors (see below), whose sum is σ = 766260. Its totient is φ = 170272.

The previous prime is 425681. The next prime is 425701. The reversal of 425690 is 96524.

It can be written as a sum of positive squares in 2 ways, for example, as 421201 + 4489 = 649^2 + 67^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×425690² = 362423952200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21275 + ... + 21294.

2⁴²⁵⁶⁹⁰ is an apocalyptic number.

425690 is a deficient number, since it is larger than the sum of its proper divisors (340570).

425690 is a wasteful number, since it uses less digits than its factorization.

425690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42576.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 425690 is about 652.4492317414. The cubic root of 425690 is about 75.2253960173.

The spelling of 425690 in words is "four hundred twenty-five thousand, six hundred ninety".