199225937531 has 4 divisors (see below), whose sum is σ = 199961088864. Its totient is φ = 198490786200.

The previous prime is 199225937507. The next prime is 199225937543. The reversal of 199225937531 is 135739522991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135739522991 = 17 ⋅7984677823.

It is a cyclic number.

It is not a de Polignac number, because 199225937531 - 2⁶ = 199225937467 is a prime.

It is a super-3 number, since 3×199225937531³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199225937501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367575260 + ... + 367575801.

It is an arithmetic number, because the mean of its divisors is an integer number (49990272216).

Almost surely, 2^199225937531 is an apocalyptic number.

199225937531 is a deficient number, since it is larger than the sum of its proper divisors (735151333).

199225937531 is an equidigital number, since it uses as much as digits as its factorization.

199225937531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735151332.

The product of its digits is 4592700, while the sum is 56.

The spelling of 199225937531 in words is "one hundred ninety-nine billion, two hundred twenty-five million, nine hundred thirty-seven thousand, five hundred thirty-one".