20111225152 has 14 divisors (see below), whose sum is σ = 39908212538. Its totient is φ = 10055612544.

The previous prime is 20111225149. The next prime is 20111225191. The reversal of 20111225152 is 25152211102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10171932736 + 9939292416 = 100856^2 + 99696^2 .

It is a super-2 number, since 2×20111225152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157118883 + ... + 157119010.

Almost surely, 2^20111225152 is an apocalyptic number.

It is an amenable number.

20111225152 is a deficient number, since it is larger than the sum of its proper divisors (19796987386).

20111225152 is an equidigital number, since it uses as much as digits as its factorization.

20111225152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314237905 (or 314237895 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 20111225152 its reverse (25152211102), we get a palindrome (45263436254).

The spelling of 20111225152 in words is "twenty billion, one hundred eleven million, two hundred twenty-five thousand, one hundred fifty-two".