27552525525 has 72 divisors (see below), whose sum is σ = 56811703104. Its totient is φ = 12503404800.

The previous prime is 27552525521. The next prime is 27552525541. The reversal of 27552525525 is 52552525572.

27552525525 is a `hidden beast` number, since 2 + 75 + 5 + 2 + 52 + 5 + 525 = 666.

It is not a de Polignac number, because 27552525525 - 2² = 27552525521 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27552525521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 151930 + ... + 279620.

It is an arithmetic number, because the mean of its divisors is an integer number (789051432).

Almost surely, 2^27552525525 is an apocalyptic number.

27552525525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27552525525 is an abundant number, since it is smaller than the sum of its proper divisors (29259177579).

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

27552525525 is a wasteful number, since it uses less digits than its factorization.

27552525525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127851 (or 127843 counting only the distinct ones).

The product of its digits is 1750000, while the sum is 45.

The spelling of 27552525525 in words is "twenty-seven billion, five hundred fifty-two million, five hundred twenty-five thousand, five hundred twenty-five".