25530623 has 4 divisors (see below), whose sum is σ = 26874360. Its totient is φ = 24186888.

The previous prime is 25530611. The next prime is 25530649. The reversal of 25530623 is 32603552.

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 25530623 - 2⁴ = 25530607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25530592 and 25530601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25535623) 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, 671840 + ... + 671877.

It is an arithmetic number, because the mean of its divisors is an integer number (6718590).

Almost surely, 2^25530623 is an apocalyptic number.

25530623 is a deficient number, since it is larger than the sum of its proper divisors (1343737).

25530623 is a wasteful number, since it uses less digits than its factorization.

25530623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343736.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 25530623 is about 5052.7836882257. The cubic root of 25530623 is about 294.4560425109.

The spelling of 25530623 in words is "twenty-five million, five hundred thirty thousand, six hundred twenty-three".