11005520425 has 12 divisors (see below), whose sum is σ = 13725734220. Its totient is φ = 8753520320.

The previous prime is 11005520399. The next prime is 11005520429. The reversal of 11005520425 is 52402550011.

It can be written as a sum of positive squares in 6 ways, for example, as 685601856 + 10319918569 = 26184^2 + 101587^2 .

It is not a de Polignac number, because 11005520425 - 2⁷ = 11005520297 is a prime.

It is a super-2 number, since 2×11005520425² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 11005520425.

It is not an unprimeable number, because it can be changed into a prime (11005520429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1267990 + ... + 1276639.

It is an arithmetic number, because the mean of its divisors is an integer number (1143811185).

Almost surely, 2^11005520425 is an apocalyptic number.

It is an amenable number.

11005520425 is a deficient number, since it is larger than the sum of its proper divisors (2720213795).

11005520425 is a wasteful number, since it uses less digits than its factorization.

11005520425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544812 (or 2544807 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 11005520425 in words is "eleven billion, five million, five hundred twenty thousand, four hundred twenty-five".