523025389 has 2 divisors, whose sum is σ = 523025390. Its totient is φ = 523025388.

The previous prime is 523025387. The next prime is 523025401. The reversal of 523025389 is 983520325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402684489 + 120340900 = 20067^2 + 10970^2 .

It is a cyclic number.

It is not a de Polignac number, because 523025389 - 2¹ = 523025387 is a prime.

Together with 523025387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523025381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261512694 + 261512695.

It is an arithmetic number, because the mean of its divisors is an integer number (261512695).

Almost surely, 2^523025389 is an apocalyptic number.

It is an amenable number.

523025389 is a deficient number, since it is larger than the sum of its proper divisors (1).

523025389 is an equidigital number, since it uses as much as digits as its factorization.

523025389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 523025389 is about 22869.7483370500. The cubic root of 523025389 is about 805.7016574433.

The spelling of 523025389 in words is "five hundred twenty-three million, twenty-five thousand, three hundred eighty-nine".