6525521253 has 24 divisors (see below), whose sum is σ = 9925741280. Its totient is φ = 4119763680.

The previous prime is 6525521237. The next prime is 6525521269. The reversal of 6525521253 is 3521255256.

6525521253 is a `hidden beast` number, since 6 + 52 + 552 + 1 + 2 + 53 = 666.

It is an interprime number because it is at equal distance from previous prime (6525521237) and next prime (6525521269).

It is not a de Polignac number, because 6525521253 - 2⁴ = 6525521237 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 (6525521273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550398 + ... + 562128.

Almost surely, 2^6525521253 is an apocalyptic number.

It is an amenable number.

6525521253 is a deficient number, since it is larger than the sum of its proper divisors (3400220027).

6525521253 is a wasteful number, since it uses less digits than its factorization.

6525521253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15009 (or 15006 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 6525521253 is about 80780.6985176533. The cubic root of 6525521253 is about 1868.6949107253.

The spelling of 6525521253 in words is "six billion, five hundred twenty-five million, five hundred twenty-one thousand, two hundred fifty-three".