213025789 has 2 divisors, whose sum is σ = 213025790. Its totient is φ = 213025788.

The previous prime is 213025723. The next prime is 213025823. The reversal of 213025789 is 987520312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171164889 + 41860900 = 13083^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 213025789 - 2¹⁹ = 212501501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213025889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106512894 + 106512895.

It is an arithmetic number, because the mean of its divisors is an integer number (106512895).

Almost surely, 2^213025789 is an apocalyptic number.

It is an amenable number.

213025789 is a deficient number, since it is larger than the sum of its proper divisors (1).

213025789 is an equidigital number, since it uses as much as digits as its factorization.

213025789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 213025789 is about 14595.4030091670. The cubic root of 213025789 is about 597.2333634038.

The spelling of 213025789 in words is "two hundred thirteen million, twenty-five thousand, seven hundred eighty-nine".