20525635152 has 120 divisors (see below), whose sum is σ = 64359228960. Its totient is φ = 6051767040.

The previous prime is 20525635129. The next prime is 20525635159. The reversal of 20525635152 is 25153652502.

20525635152 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 5 + 635 + 15 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525635159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116502 + ... + 233717.

It is an arithmetic number, because the mean of its divisors is an integer number (536326908).

Almost surely, 2^20525635152 is an apocalyptic number.

20525635152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20525635152 is an abundant number, since it is smaller than the sum of its proper divisors (43833593808).

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

20525635152 is a wasteful number, since it uses less digits than its factorization.

20525635152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350281 (or 350272 counting only the distinct ones).

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

The spelling of 20525635152 in words is "twenty billion, five hundred twenty-five million, six hundred thirty-five thousand, one hundred fifty-two".