20423252441025 has 90 divisors (see below), whose sum is σ = 44007400915830. Its totient is φ = 9336343927680.

The previous prime is 20423252441003. The next prime is 20423252441027. The reversal of 20423252441025 is 52014425232402.

20423252441025 is a `hidden beast` number, since 2 + 0 + 4 + 23 + 2 + 524 + 4 + 102 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 137272473009 + 20285979968016 = 370503^2 + 4503996^2 .

It is not a de Polignac number, because 20423252441025 - 2⁵ = 20423252440993 is a prime.

It is a super-2 number, since 2×20423252441025² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20423252441027) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 102814620 + ... + 103013069.

It is an arithmetic number, because the mean of its divisors is an integer number (488971121287).

Almost surely, 2^{20423252441025} is an apocalyptic number.

20423252441025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20423252441025 is an abundant number, since it is smaller than the sum of its proper divisors (23584148474805).

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

20423252441025 is a wasteful number, since it uses less digits than its factorization.

20423252441025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205827725 (or 205827704 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 20423252441025 its reverse (52014425232402), we get a palindrome (72437677673427).

The spelling of 20423252441025 in words is "twenty trillion, four hundred twenty-three billion, two hundred fifty-two million, four hundred forty-one thousand, twenty-five".