20339038225 has 27 divisors (see below), whose sum is σ = 27732299889. Its totient is φ = 14786323200.

The previous prime is 20339038211. The next prime is 20339038249. The reversal of 20339038225 is 52283093302.

The square root of 20339038225 is 142615.

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

It can be written as a sum of positive squares in 4 ways, for example, as 28227969 + 20310810256 = 5313^2 + 142516^2 .

It is not a de Polignac number, because 20339038225 - 2⁹ = 20339037713 is a prime.

It is a super-2 number, since 2×20339038225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 7842529 + ... + 7845121.

Almost surely, 2^20339038225 is an apocalyptic number.

20339038225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20339038225 is the 142615-th square number.

20339038225 is the 71308-th centered octagonal number.

It is an amenable number.

20339038225 is a deficient number, since it is larger than the sum of its proper divisors (7393261664).

20339038225 is an frugal number, since it uses more digits than its factorization.

20339038225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 20339038225 in words is "twenty billion, three hundred thirty-nine million, thirty-eight thousand, two hundred twenty-five".