20367571225 has 81 divisors (see below), whose sum is σ = 28435454103. Its totient is φ = 14467875840.

The previous prime is 20367571223. The next prime is 20367571229. The reversal of 20367571225 is 52217576302.

The square root of 20367571225 is 142715.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 5820316681 + 14547254544 = 76291^2 + 120612^2 .

It is not a de Polignac number, because 20367571225 - 2¹ = 20367571223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20367571223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 279007789 + ... + 279007861.

Almost surely, 2^20367571225 is an apocalyptic number.

20367571225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20367571225 is the 142715-th square number.

20367571225 is the 71358-th centered octagonal number.

It is an amenable number.

20367571225 is a deficient number, since it is larger than the sum of its proper divisors (8067882878).

20367571225 is an equidigital number, since it uses as much as digits as its factorization.

20367571225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 20367571225 in words is "twenty billion, three hundred sixty-seven million, five hundred seventy-one thousand, two hundred twenty-five".