200125691 has 4 divisors (see below), whose sum is σ = 208826832. Its totient is φ = 191424552.

The previous prime is 200125663. The next prime is 200125733. The reversal of 200125691 is 196521002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200125691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200125691.

It is not an unprimeable number, because it can be changed into a prime (200125621) 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, 4350536 + ... + 4350581.

It is an arithmetic number, because the mean of its divisors is an integer number (52206708).

Almost surely, 2^200125691 is an apocalyptic number.

200125691 is a deficient number, since it is larger than the sum of its proper divisors (8701141).

200125691 is an equidigital number, since it uses as much as digits as its factorization.

200125691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701140.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 200125691 is about 14146.5787736823. The cubic root of 200125691 is about 584.9260295592.

Adding to 200125691 its reverse (196521002), we get a palindrome (396646693).

The spelling of 200125691 in words is "two hundred million, one hundred twenty-five thousand, six hundred ninety-one".