11013421025 has 24 divisors (see below), whose sum is σ = 14016295608. Its totient is φ = 8579520000.

The previous prime is 11013421021. The next prime is 11013421033. The reversal of 11013421025 is 52012431011.

It can be written as a sum of positive squares in 12 ways, for example, as 9610469089 + 1402951936 = 98033^2 + 37456^2 .

It is not a de Polignac number, because 11013421025 - 2² = 11013421021 is a prime.

It is a super-3 number, since 3×11013421025³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11013420988 and 11013421006.

It is not an unprimeable number, because it can be changed into a prime (11013421021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544595 + ... + 564455.

It is an arithmetic number, because the mean of its divisors is an integer number (584012317).

Almost surely, 2^11013421025 is an apocalyptic number.

It is an amenable number.

11013421025 is a deficient number, since it is larger than the sum of its proper divisors (3002874583).

11013421025 is a wasteful number, since it uses less digits than its factorization.

11013421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20453 (or 20448 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11013421025 its reverse (52012431011), we get a palindrome (63025852036).

The spelling of 11013421025 in words is "eleven billion, thirteen million, four hundred twenty-one thousand, twenty-five".