23180725 has 6 divisors (see below), whose sum is σ = 28744130. Its totient is φ = 18544560.

The previous prime is 23180699. The next prime is 23180737. The reversal of 23180725 is 52708132.

It can be written as a sum of positive squares in 3 ways, for example, as 1034289 + 22146436 = 1017^2 + 4706^2 .

It is not a de Polignac number, because 23180725 - 2⁵ = 23180693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23180693 and 23180702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 463590 + ... + 463639.

Almost surely, 2^23180725 is an apocalyptic number.

23180725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23180725 is a deficient number, since it is larger than the sum of its proper divisors (5563405).

23180725 is an equidigital number, since it uses as much as digits as its factorization.

23180725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927239 (or 927234 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 23180725 is about 4814.6365387223. The cubic root of 23180725 is about 285.1296219647.

Adding to 23180725 its reverse (52708132), we get a palindrome (75888857).

The spelling of 23180725 in words is "twenty-three million, one hundred eighty thousand, seven hundred twenty-five".