191113425 has 72 divisors (see below), whose sum is σ = 359011744. Its totient is φ = 100776960.

The previous prime is 191113379. The next prime is 191113441. The reversal of 191113425 is 524311191.

It is a happy number.

It is not a de Polignac number, because 191113425 - 2⁶ = 191113361 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 990129 + ... + 990321.

Almost surely, 2^191113425 is an apocalyptic number.

191113425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191113425 is a deficient number, since it is larger than the sum of its proper divisors (167898319).

191113425 is a wasteful number, since it uses less digits than its factorization.

191113425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 364 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 191113425 is about 13824.3779245216. The cubic root of 191113425 is about 576.0104978555.

The spelling of 191113425 in words is "one hundred ninety-one million, one hundred thirteen thousand, four hundred twenty-five".