85062639025 has 81 divisors (see below), whose sum is σ = 133070488803. Its totient is φ = 53757849600.

The previous prime is 85062639017. The next prime is 85062639037. The reversal of 85062639025 is 52093626058.

The square root of 85062639025 is 291655.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 47995608241 + 37067030784 = 219079^2 + 192528^2 .

It is not a de Polignac number, because 85062639025 - 2³ = 85062639017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 132702705 + ... + 132703345.

Almost surely, 2^85062639025 is an apocalyptic number.

85062639025 is the 291655-th square number.

85062639025 is the 145828-th centered octagonal number.

It is an amenable number.

85062639025 is a deficient number, since it is larger than the sum of its proper divisors (48007849778).

85062639025 is an equidigital number, since it uses as much as digits as its factorization.

85062639025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 85062639025 in words is "eighty-five billion, sixty-two million, six hundred thirty-nine thousand, twenty-five".