20153361625 has 8 divisors (see below), whose sum is σ = 25151395464. Its totient is φ = 16122689200.

The previous prime is 20153361611. The next prime is 20153361653. The reversal of 20153361625 is 52616335102.

It can be written as a sum of positive squares in 4 ways, for example, as 38180041 + 20115181584 = 6179^2 + 141828^2 .

It is not a de Polignac number, because 20153361625 - 2¹³ = 20153353433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80613322 + ... + 80613571.

It is an arithmetic number, because the mean of its divisors is an integer number (3143924433).

Almost surely, 2^20153361625 is an apocalyptic number.

20153361625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20153361625 is a deficient number, since it is larger than the sum of its proper divisors (4998033839).

20153361625 is an equidigital number, since it uses as much as digits as its factorization.

20153361625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161226908 (or 161226898 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 20153361625 its reverse (52616335102), we get a palindrome (72769696727).

The spelling of 20153361625 in words is "twenty billion, one hundred fifty-three million, three hundred sixty-one thousand, six hundred twenty-five".