625045919 has 4 divisors (see below), whose sum is σ = 661813344. Its totient is φ = 588278496.

The previous prime is 625045909. The next prime is 625045991. The reversal of 625045919 is 919540526.

625045919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 625045919 - 2¹⁶ = 624980383 is a prime.

It is a super-2 number, since 2×625045919² = 781364801717109122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625045909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18383687 + ... + 18383720.

It is an arithmetic number, because the mean of its divisors is an integer number (165453336).

Almost surely, 2^625045919 is an apocalyptic number.

625045919 is a deficient number, since it is larger than the sum of its proper divisors (36767425).

625045919 is a wasteful number, since it uses less digits than its factorization.

625045919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36767424.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 625045919 is about 25000.9183631322. The cubic root of 625045919 is about 855.0089115950.

The spelling of 625045919 in words is "six hundred twenty-five million, forty-five thousand, nine hundred nineteen".