85725722 has 4 divisors (see below), whose sum is σ = 128588586. Its totient is φ = 42862860.

The previous prime is 85725721. The next prime is 85725737. The reversal of 85725722 is 22752758.

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

It can be written as a sum of positive squares in only one way, i.e., 79370281 + 6355441 = 8909^2 + 2521^2 .

It is not an unprimeable number, because it can be changed into a prime (85725721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21431429 + ... + 21431432.

Almost surely, 2^85725722 is an apocalyptic number.

85725722 is a deficient number, since it is larger than the sum of its proper divisors (42862864).

85725722 is a wasteful number, since it uses less digits than its factorization.

85725722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42862863.

The product of its digits is 78400, while the sum is 38.

The square root of 85725722 is about 9258.8186071442. The cubic root of 85725722 is about 440.9307467142.

The spelling of 85725722 in words is "eighty-five million, seven hundred twenty-five thousand, seven hundred twenty-two".