625434493 has 2 divisors, whose sum is σ = 625434494. Its totient is φ = 625434492.

The previous prime is 625434461. The next prime is 625434553. The reversal of 625434493 is 394434526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320338404 + 305096089 = 17898^2 + 17467^2 .

It is a cyclic number.

It is not a de Polignac number, because 625434493 - 2⁵ = 625434461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625134493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312717246 + 312717247.

It is an arithmetic number, because the mean of its divisors is an integer number (312717247).

Almost surely, 2^625434493 is an apocalyptic number.

It is an amenable number.

625434493 is a deficient number, since it is larger than the sum of its proper divisors (1).

625434493 is an equidigital number, since it uses as much as digits as its factorization.

625434493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 40.

The square root of 625434493 is about 25008.6883502514. The cubic root of 625434493 is about 855.1860534655.

The spelling of 625434493 in words is "six hundred twenty-five million, four hundred thirty-four thousand, four hundred ninety-three".