6525259920 has 60 divisors (see below), whose sum is σ = 21914000316. Its totient is φ = 1740069120.

The previous prime is 6525259907. The next prime is 6525259963. The reversal of 6525259920 is 299525256.

6525259920 is a `hidden beast` number, since 6 + 5 + 2 + 52 + 599 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1696121856 + 4829138064 = 41184^2 + 69492^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4530711 + ... + 4532150.

Almost surely, 2^6525259920 is an apocalyptic number.

6525259920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6525259920 is an abundant number, since it is smaller than the sum of its proper divisors (15388740396).

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

6525259920 is a wasteful number, since it uses less digits than its factorization.

6525259920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9062880 (or 9062871 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 6525259920 is about 80779.0809554058. The cubic root of 6525259920 is about 1868.6699646636.

The spelling of 6525259920 in words is "six billion, five hundred twenty-five million, two hundred fifty-nine thousand, nine hundred twenty".