425849 has 4 divisors (see below), whose sum is σ = 427764. Its totient is φ = 423936.

The previous prime is 425839. The next prime is 425851. The reversal of 425849 is 948524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 310249 + 115600 = 557^2 + 340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425849 is a prime.

It is a Duffinian number.

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 425849.

It is not an unprimeable number, because it can be changed into a prime (425819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (106941).

2⁴²⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

425849 is a deficient number, since it is larger than the sum of its proper divisors (1915).

425849 is a wasteful number, since it uses less digits than its factorization.

425849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its digits is 11520, while the sum is 32.

The square root of 425849 is about 652.5710689266. The cubic root of 425849 is about 75.2347606951.

It can be divided in two parts, 425 and 849, that multiplied together give a triangular number (360825 = T₈₄₉).

The spelling of 425849 in words is "four hundred twenty-five thousand, eight hundred forty-nine".