623505325 has 12 divisors (see below), whose sum is σ = 798087808. Its totient is φ = 482713200.

The previous prime is 623505313. The next prime is 623505329. The reversal of 623505325 is 523505326.

It is not a de Polignac number, because 623505325 - 2⁹ = 623504813 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623505329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401487 + ... + 403036.

Almost surely, 2^623505325 is an apocalyptic number.

It is an amenable number.

623505325 is a deficient number, since it is larger than the sum of its proper divisors (174582483).

623505325 is a wasteful number, since it uses less digits than its factorization.

623505325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804564 (or 804559 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 623505325 is about 24970.0886061704. The cubic root of 623505325 is about 854.3058670884.

Subtracting from 623505325 its reverse (523505326), we obtain a palindrome (99999999).

The spelling of 623505325 in words is "six hundred twenty-three million, five hundred five thousand, three hundred twenty-five".