20523402510225 has 48 divisors (see below), whose sum is σ = 34123778985984. Its totient is φ = 10884052872000.

The previous prime is 20523402510203. The next prime is 20523402510239. The reversal of 20523402510225 is 52201520432502.

It is not a de Polignac number, because 20523402510225 - 2¹⁶ = 20523402444689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16867080 + ... + 18042870.

It is an arithmetic number, because the mean of its divisors is an integer number (710912062208).

Almost surely, 2^{20523402510225} is an apocalyptic number.

20523402510225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20523402510225 is a deficient number, since it is larger than the sum of its proper divisors (13600376475759).

20523402510225 is a wasteful number, since it uses less digits than its factorization.

20523402510225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177118 (or 1177113 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 20523402510225 its reverse (52201520432502), we get a palindrome (72724922942727).

The spelling of 20523402510225 in words is "twenty trillion, five hundred twenty-three billion, four hundred two million, five hundred ten thousand, two hundred twenty-five".