20524207033225 has 27 divisors (see below), whose sum is σ = 29605350212487. Its totient is φ = 14073633236880.

The previous prime is 20524207033217. The next prime is 20524207033243. The reversal of 20524207033225 is 52233070242502.

The square root of 20524207033225 is 4530365.

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

It can be written as a sum of positive squares in only one way, i.e., 7388714531961 + 13135492501264 = 2718219^2 + 3624292^2 .

It is not a de Polignac number, because 20524207033225 - 2³ = 20524207033217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 158498056 + ... + 158627494.

Almost surely, 2^{20524207033225} is an apocalyptic number.

20524207033225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20524207033225 is the 4530365-th square number.

20524207033225 is the 2265183-rd centered octagonal number.

It is an amenable number.

20524207033225 is a deficient number, since it is larger than the sum of its proper divisors (9081143179262).

20524207033225 is an frugal number, since it uses more digits than its factorization.

20524207033225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258902 (or 129451 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 37.

Adding to 20524207033225 its reverse (52233070242502), we get a palindrome (72757277275727).

The spelling of 20524207033225 in words is "twenty trillion, five hundred twenty-four billion, two hundred seven million, thirty-three thousand, two hundred twenty-five".