23515304425 has 12 divisors (see below), whose sum is σ = 29176253260. Its totient is φ = 18801097920.

The previous prime is 23515304389. The next prime is 23515304447. The reversal of 23515304425 is 52440351532.

It can be written as a sum of positive squares in 6 ways, for example, as 457489321 + 23057815104 = 21389^2 + 151848^2 .

It is not a de Polignac number, because 23515304425 - 2⁹ = 23515303913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235470 + ... + 320119.

Almost surely, 2^23515304425 is an apocalyptic number.

23515304425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23515304425 is a deficient number, since it is larger than the sum of its proper divisors (5660948835).

23515304425 is a wasteful number, since it uses less digits than its factorization.

23515304425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557292 (or 557287 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 23515304425 its reverse (52440351532), we get a palindrome (75955655957).

The spelling of 23515304425 in words is "twenty-three billion, five hundred fifteen million, three hundred four thousand, four hundred twenty-five".