11908605825 has 120 divisors (see below), whose sum is σ = 24112028160. Its totient is φ = 5784307200.

The previous prime is 11908605811. The next prime is 11908605827. The reversal of 11908605825 is 52850680911.

It is a happy number.

11908605825 is a `hidden beast` number, since 1 + 1 + 9 + 0 + 8 + 60 + 582 + 5 = 666.

It is not a de Polignac number, because 11908605825 - 2²¹ = 11906508673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (11908605827) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1061596 + ... + 1072754.

It is an arithmetic number, because the mean of its divisors is an integer number (200933568).

Almost surely, 2^11908605825 is an apocalyptic number.

11908605825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11908605825 is an abundant number, since it is smaller than the sum of its proper divisors (12203422335).

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

11908605825 is a wasteful number, since it uses less digits than its factorization.

11908605825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11229 (or 11215 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 11908605825 in words is "eleven billion, nine hundred eight million, six hundred five thousand, eight hundred twenty-five".