23140625 has 14 divisors (see below), whose sum is σ = 28944942. Its totient is φ = 18500000.

The previous prime is 23140609. The next prime is 23140657. The reversal of 23140625 is 52604132.

It can be written as a sum of positive squares in 7 ways, for example, as 23030401 + 110224 = 4799^2 + 332^2 .

It is not a de Polignac number, because 23140625 - 2⁴ = 23140609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23140625.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 14885 + ... + 16365.

Almost surely, 2^23140625 is an apocalyptic number.

23140625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23140625 is a deficient number, since it is larger than the sum of its proper divisors (5804317).

23140625 is an frugal number, since it uses more digits than its factorization.

23140625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23140625 is about 4810.4703512235. The cubic root of 23140625 is about 284.9651132017.

Adding to 23140625 its reverse (52604132), we get a palindrome (75744757).

The spelling of 23140625 in words is "twenty-three million, one hundred forty thousand, six hundred twenty-five".