85725425 has 6 divisors (see below), whose sum is σ = 106299558. Its totient is φ = 68580320.

The previous prime is 85725377. The next prime is 85725457. The reversal of 85725425 is 52452758.

It can be written as a sum of positive squares in 3 ways, for example, as 12845056 + 72880369 = 3584^2 + 8537^2 .

It is not a de Polignac number, because 85725425 - 2¹⁸ = 85463281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1714484 + ... + 1714533.

It is an arithmetic number, because the mean of its divisors is an integer number (17716593).

Almost surely, 2^85725425 is an apocalyptic number.

It is an amenable number.

85725425 is a deficient number, since it is larger than the sum of its proper divisors (20574133).

85725425 is a wasteful number, since it uses less digits than its factorization.

85725425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429027 (or 3429022 counting only the distinct ones).

The product of its digits is 112000, while the sum is 38.

The square root of 85725425 is about 9258.8025683670. The cubic root of 85725425 is about 440.9302375066.

The spelling of 85725425 in words is "eighty-five million, seven hundred twenty-five thousand, four hundred twenty-five".