191268925 has 6 divisors (see below), whose sum is σ = 237173498. Its totient is φ = 153015120.

The previous prime is 191268907. The next prime is 191268929. The reversal of 191268925 is 529862191.

191268925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 68790436 + 122478489 = 8294^2 + 11067^2 .

It is not a de Polignac number, because 191268925 - 2⁷ = 191268797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191268929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3825354 + ... + 3825403.

Almost surely, 2^191268925 is an apocalyptic number.

It is an amenable number.

191268925 is a deficient number, since it is larger than the sum of its proper divisors (45904573).

191268925 is an equidigital number, since it uses as much as digits as its factorization.

191268925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650767 (or 7650762 counting only the distinct ones).

The product of its digits is 77760, while the sum is 43.

The square root of 191268925 is about 13830.0009038322. Note that the first 3 decimals coincide. The cubic root of 191268925 is about 576.1666797155.

It can be divided in two parts, 1912689 and 25, that multiplied together give a square (47817225 = 6915²).

The spelling of 191268925 in words is "one hundred ninety-one million, two hundred sixty-eight thousand, nine hundred twenty-five".