11251125018 has 112 divisors (see below), whose sum is σ = 28992865536. Its totient is φ = 3206316960.

The previous prime is 11251125001. The next prime is 11251125019. The reversal of 11251125018 is 81052115211.

11251125018 is a `hidden beast` number, since 112 + 511 + 25 + 0 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11251124982 and 11251125000.

It is not an unprimeable number, because it can be changed into a prime (11251125019) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4724188 + ... + 4726568.

Almost surely, 2^11251125018 is an apocalyptic number.

11251125018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11251125018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14496432768).

11251125018 is an abundant number, since it is smaller than the sum of its proper divisors (17741740518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11251125018 is an equidigital number, since it uses as much as digits as its factorization.

11251125018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 27.

The spelling of 11251125018 in words is "eleven billion, two hundred fifty-one million, one hundred twenty-five thousand, eighteen".