11398180825 has 12 divisors (see below), whose sum is σ = 14965141500. Its totient is φ = 8582159360.

The previous prime is 11398180811. The next prime is 11398180831. The reversal of 11398180825 is 52808189311.

It can be written as a sum of positive squares in 6 ways, for example, as 562828176 + 10835352649 = 23724^2 + 104093^2 .

It is not a de Polignac number, because 11398180825 - 2²³ = 11389792217 is a prime.

It is a super-2 number, since 2×11398180825² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13409200 + ... + 13410049.

It is an arithmetic number, because the mean of its divisors is an integer number (1247095125).

Almost surely, 2^11398180825 is an apocalyptic number.

It is an amenable number.

11398180825 is a deficient number, since it is larger than the sum of its proper divisors (3566960675).

11398180825 is a wasteful number, since it uses less digits than its factorization.

11398180825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26819276 (or 26819271 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 11398180825 in words is "eleven billion, three hundred ninety-eight million, one hundred eighty thousand, eight hundred twenty-five".