11405125020 has 24 divisors (see below), whose sum is σ = 31934350224. Its totient is φ = 3041366656.

The previous prime is 11405124989. The next prime is 11405125027. The reversal of 11405125020 is 2052150411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405125027) 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, 95042649 + ... + 95042768.

It is an arithmetic number, because the mean of its divisors is an integer number (1330597926).

Almost surely, 2^11405125020 is an apocalyptic number.

11405125020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11405125020 is an abundant number, since it is smaller than the sum of its proper divisors (20529225204).

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

11405125020 is a wasteful number, since it uses less digits than its factorization.

11405125020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190085429 (or 190085427 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 11405125020 its reverse (2052150411), we get a palindrome (13457275431).

The spelling of 11405125020 in words is "eleven billion, four hundred five million, one hundred twenty-five thousand, twenty".