85725541 has 4 divisors (see below), whose sum is σ = 93518784. Its totient is φ = 77932300.

The previous prime is 85725533. The next prime is 85725551. The reversal of 85725541 is 14552758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85725541 - 2³ = 85725533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85725541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85725551) 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 3 ways as a sum of consecutive naturals, for example, 3896605 + ... + 3896626.

It is an arithmetic number, because the mean of its divisors is an integer number (23379696).

Almost surely, 2^85725541 is an apocalyptic number.

It is an amenable number.

85725541 is a deficient number, since it is larger than the sum of its proper divisors (7793243).

85725541 is a wasteful number, since it uses less digits than its factorization.

85725541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793242.

The product of its digits is 56000, while the sum is 37.

The square root of 85725541 is about 9258.8088326739. The cubic root of 85725541 is about 440.9304363892.

The spelling of 85725541 in words is "eighty-five million, seven hundred twenty-five thousand, five hundred forty-one".