11025881381 has 8 divisors (see below), whose sum is σ = 11520484224. Its totient is φ = 10532546640.

The previous prime is 11025881359. The next prime is 11025881389. The reversal of 11025881381 is 18318852011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11025881381 - 2¹⁸ = 11025619237 is a prime.

It is a super-2 number, since 2×11025881381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11025881389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299225 + ... + 334046.

It is an arithmetic number, because the mean of its divisors is an integer number (1440060528).

Almost surely, 2^11025881381 is an apocalyptic number.

It is an amenable number.

11025881381 is a deficient number, since it is larger than the sum of its proper divisors (494602843).

11025881381 is an equidigital number, since it uses as much as digits as its factorization.

11025881381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634051.

The product of its (nonzero) digits is 15360, while the sum is 38.

The spelling of 11025881381 in words is "eleven billion, twenty-five million, eight hundred eighty-one thousand, three hundred eighty-one".