6541525152 has 72 divisors (see below), whose sum is σ = 18610349940. Its totient is φ = 2179584000.

The previous prime is 6541525129. The next prime is 6541525153. The reversal of 6541525152 is 2515251456.

It can be written as a sum of positive squares in 2 ways, for example, as 5764453776 + 777071376 = 75924^2 + 27876^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6541525153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1186402 + ... + 1191902.

Almost surely, 2^6541525152 is an apocalyptic number.

It is an amenable number.

6541525152 is an abundant number, since it is smaller than the sum of its proper divisors (12068824788).

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

6541525152 is a wasteful number, since it uses less digits than its factorization.

6541525152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9646 (or 9635 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 6541525152 is about 80879.6955483884. The cubic root of 6541525152 is about 1870.2213271926.

The spelling of 6541525152 in words is "six billion, five hundred forty-one million, five hundred twenty-five thousand, one hundred fifty-two".