200125621 has 2 divisors, whose sum is σ = 200125622. Its totient is φ = 200125620.

The previous prime is 200125591. The next prime is 200125661. The reversal of 200125621 is 126521002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196280100 + 3845521 = 14010^2 + 1961^2 .

It is a cyclic number.

It is not a de Polignac number, because 200125621 - 2⁵ = 200125589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200125661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100062810 + 100062811.

It is an arithmetic number, because the mean of its divisors is an integer number (100062811).

Almost surely, 2^200125621 is an apocalyptic number.

It is an amenable number.

200125621 is a deficient number, since it is larger than the sum of its proper divisors (1).

200125621 is an equidigital number, since it uses as much as digits as its factorization.

200125621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 200125621 is about 14146.5762995857. The cubic root of 200125621 is about 584.9259613607.

Adding to 200125621 its reverse (126521002), we get a palindrome (326646623).

The spelling of 200125621 in words is "two hundred million, one hundred twenty-five thousand, six hundred twenty-one".