625723869 has 4 divisors (see below), whose sum is σ = 834298496. Its totient is φ = 417149244.

The previous prime is 625723853. The next prime is 625723937. The reversal of 625723869 is 968327526.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 625723869 - 2⁴ = 625723853 is a prime.

It is a super-2 number, since 2×625723869² = 783060720472658322, 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 (625723829) 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 in 3 ways as a sum of consecutive naturals, for example, 104287309 + ... + 104287314.

It is an arithmetic number, because the mean of its divisors is an integer number (208574624).

Almost surely, 2^625723869 is an apocalyptic number.

It is an amenable number.

625723869 is a deficient number, since it is larger than the sum of its proper divisors (208574627).

625723869 is a wasteful number, since it uses less digits than its factorization.

625723869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208574626.

The product of its digits is 1088640, while the sum is 48.

The square root of 625723869 is about 25014.4731905351. The cubic root of 625723869 is about 855.3179256095.

The spelling of 625723869 in words is "six hundred twenty-five million, seven hundred twenty-three thousand, eight hundred sixty-nine".