7520856525 has 432 divisors, whose sum is σ = 18623474688. Its totient is φ = 2820096000.

The previous prime is 7520856517. The next prime is 7520856529. The reversal of 7520856525 is 5256580257.

7520856525 is a `hidden beast` number, since 75 + 2 + 0 + 8 + 56 + 525 = 666.

It is not a de Polignac number, because 7520856525 - 2³ = 7520856517 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7520856529) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 183435505 + ... + 183435545.

Almost surely, 2^7520856525 is an apocalyptic number.

7520856525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7520856525 is an abundant number, since it is smaller than the sum of its proper divisors (11102618163).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7520856525 is a wasteful number, since it uses less digits than its factorization.

7520856525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The square root of 7520856525 is about 86722.8719831164. The cubic root of 7520856525 is about 1959.2465975852.

It can be divided in two parts, 7520856 and 525, that added together give a triangular number (7521381 = T₃₈₇₈).

The spelling of 7520856525 in words is "seven billion, five hundred twenty million, eight hundred fifty-six thousand, five hundred twenty-five".