20153632225 has 12 divisors (see below), whose sum is σ = 25342485120. Its totient is φ = 15895821200.

The previous prime is 20153632211. The next prime is 20153632241. The reversal of 20153632225 is 52223635102.

It is not a de Polignac number, because 20153632225 - 2¹⁵ = 20153599457 is a prime.

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, 5675305 + ... + 5678854.

It is an arithmetic number, because the mean of its divisors is an integer number (2111873760).

Almost surely, 2^20153632225 is an apocalyptic number.

20153632225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20153632225 is a deficient number, since it is larger than the sum of its proper divisors (5188852895).

20153632225 is a wasteful number, since it uses less digits than its factorization.

20153632225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354240 (or 11354235 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20153632225 in words is "twenty billion, one hundred fifty-three million, six hundred thirty-two thousand, two hundred twenty-five".