785425 has 12 divisors (see below), whose sum is σ = 987660. Its totient is φ = 619520.

The previous prime is 785423. The next prime is 785431. The reversal of 785425 is 524587.

785425 = 100² + 101² + ... + 149².

It can be written as a sum of positive squares in 6 ways, for example, as 94864 + 690561 = 308^2 + 831^2 .

It is not a de Polignac number, because 785425 - 2¹ = 785423 is a prime.

It is a d-powerful number, because it can be written as 7 + 8 + 4³ + 5⁸ + 2¹² + 5⁸ .

785425 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (785423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2049 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (82305).

2⁷⁸⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

785425 is a deficient number, since it is larger than the sum of its proper divisors (202235).

785425 is a wasteful number, since it uses less digits than its factorization.

785425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 447 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 785425 is about 886.2420662550. The cubic root of 785425 is about 92.2645582839.

The spelling of 785425 in words is "seven hundred eighty-five thousand, four hundred twenty-five".