85497525 has 30 divisors (see below), whose sum is σ = 158374722. Its totient is φ = 45597600.

The previous prime is 85497499. The next prime is 85497557. The reversal of 85497525 is 52579458.

85497525 = 468² + 469² + ... + 710².

85497525 is a `hidden beast` number, since 85 + 49 + 7 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 25310961 + 60186564 = 5031^2 + 7758^2 .

It is not a de Polignac number, because 85497525 - 2⁵ = 85497493 is a prime.

It is a super-2 number, since 2×85497525² = 14619653562251250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 19086 + ... + 23135.

Almost surely, 2^85497525 is an apocalyptic number.

It is an amenable number.

85497525 is a deficient number, since it is larger than the sum of its proper divisors (72877197).

85497525 is a wasteful number, since it uses less digits than its factorization.

85497525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42243 (or 42229 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 85497525 is about 9246.4871708125. The cubic root of 85497525 is about 440.5391548471.

The spelling of 85497525 in words is "eighty-five million, four hundred ninety-seven thousand, five hundred twenty-five".