11900925 has 42 divisors (see below), whose sum is σ = 22159482. Its totient is φ = 6337440.

The previous prime is 11900909. The next prime is 11900927. The reversal of 11900925 is 52900911.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 142884 + 11758041 = 378^2 + 3429^2 .

It is not a de Polignac number, because 11900925 - 2⁴ = 11900909 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 17899 + ... + 18551.

Almost surely, 2^11900925 is an apocalyptic number.

11900925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11900925 is a deficient number, since it is larger than the sum of its proper divisors (10258557).

11900925 is an frugal number, since it uses more digits than its factorization.

11900925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 11900925 is about 3449.7717315788. The cubic root of 11900925 is about 228.3110367108.

The spelling of 11900925 in words is "eleven million, nine hundred thousand, nine hundred twenty-five".