6985525 has 6 divisors (see below), whose sum is σ = 8662082. Its totient is φ = 5588400.

The previous prime is 6985523. The next prime is 6985553. The reversal of 6985525 is 5255896.

6985525 = 349² + 350² + ... + 398².

It can be written as a sum of positive squares in 3 ways, for example, as 948676 + 6036849 = 974^2 + 2457^2 .

It is not a de Polignac number, because 6985525 - 2¹ = 6985523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985523) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 139686 + ... + 139735.

Almost surely, 2^6985525 is an apocalyptic number.

It is an amenable number.

6985525 is a deficient number, since it is larger than the sum of its proper divisors (1676557).

6985525 is a wasteful number, since it uses less digits than its factorization.

6985525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279431 (or 279426 counting only the distinct ones).

The product of its digits is 108000, while the sum is 40.

The square root of 6985525 is about 2643.0143775621. The cubic root of 6985525 is about 191.1611716728.

The spelling of 6985525 in words is "six million, nine hundred eighty-five thousand, five hundred twenty-five".