623525290 has 16 divisors (see below), whose sum is σ = 1123246080. Its totient is φ = 249210000.

The previous prime is 623525257. The next prime is 623525311. The reversal of 623525290 is 92525326.

It is a happy number.

623525290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11586 + ... + 37165.

It is an arithmetic number, because the mean of its divisors is an integer number (70202880).

Almost surely, 2^623525290 is an apocalyptic number.

623525290 is a deficient number, since it is larger than the sum of its proper divisors (499720790).

623525290 is a wasteful number, since it uses less digits than its factorization.

623525290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50037.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 623525290 is about 24970.4883812872. The cubic root of 623525290 is about 854.3149854465.

The spelling of 623525290 in words is "six hundred twenty-three million, five hundred twenty-five thousand, two hundred ninety".