191353796025 has 48 divisors (see below), whose sum is σ = 364767379584. Its totient is φ = 86701870080.

The previous prime is 191353796009. The next prime is 191353796041. The reversal of 191353796025 is 520697353191.

It is an interprime number because it is at equal distance from previous prime (191353796009) and next prime (191353796041).

It is not a de Polignac number, because 191353796025 - 2⁴ = 191353796009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1553434 + ... + 1672083.

It is an arithmetic number, because the mean of its divisors is an integer number (7599320408).

Almost surely, 2^191353796025 is an apocalyptic number.

191353796025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191353796025 is a deficient number, since it is larger than the sum of its proper divisors (173413583559).

191353796025 is a wasteful number, since it uses less digits than its factorization.

191353796025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225650 (or 3225645 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 51.

The spelling of 191353796025 in words is "one hundred ninety-one billion, three hundred fifty-three million, seven hundred ninety-six thousand, twenty-five".