625538423 has 2 divisors, whose sum is σ = 625538424. Its totient is φ = 625538422.

The previous prime is 625538411. The next prime is 625538437. The reversal of 625538423 is 324835526.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625538423 - 2¹⁴ = 625522039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625538453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312769211 + 312769212.

It is an arithmetic number, because the mean of its divisors is an integer number (312769212).

Almost surely, 2^625538423 is an apocalyptic number.

625538423 is a deficient number, since it is larger than the sum of its proper divisors (1).

625538423 is an equidigital number, since it uses as much as digits as its factorization.

625538423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 38.

The square root of 625538423 is about 25010.7661418038. The cubic root of 625538423 is about 855.2334203040.

The spelling of 625538423 in words is "six hundred twenty-five million, five hundred thirty-eight thousand, four hundred twenty-three".