623442625 has 16 divisors (see below), whose sum is σ = 837909072. Its totient is φ = 460387200.

The previous prime is 623442587. The next prime is 623442629. The reversal of 623442625 is 526244326.

It can be written as a sum of positive squares in 8 ways, for example, as 469285569 + 154157056 = 21663^2 + 12416^2 .

It is not a de Polignac number, because 623442625 - 2¹³ = 623434433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (623442629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190204 + ... + 193453.

It is an arithmetic number, because the mean of its divisors is an integer number (52369317).

Almost surely, 2^623442625 is an apocalyptic number.

623442625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

623442625 is a deficient number, since it is larger than the sum of its proper divisors (214466447).

623442625 is a wasteful number, since it uses less digits than its factorization.

623442625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383685 (or 383675 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 623442625 is about 24968.8330724525. The cubic root of 623442625 is about 854.2772296567.

The spelling of 623442625 in words is "six hundred twenty-three million, four hundred forty-two thousand, six hundred twenty-five".