25165040325 has 24 divisors (see below), whose sum is σ = 42730696608. Its totient is φ = 13058614080.

The previous prime is 25165040309. The next prime is 25165040389. The reversal of 25165040325 is 52304056152.

It is not a de Polignac number, because 25165040325 - 2⁴ = 25165040309 is a prime.

It is a super-2 number, since 2×25165040325² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4531467 + ... + 4537016.

It is an arithmetic number, because the mean of its divisors is an integer number (1780445692).

Almost surely, 2^25165040325 is an apocalyptic number.

25165040325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25165040325 is a deficient number, since it is larger than the sum of its proper divisors (17565656283).

25165040325 is a wasteful number, since it uses less digits than its factorization.

25165040325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068533 (or 9068528 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 25165040325 its reverse (52304056152), we get a palindrome (77469096477).

The spelling of 25165040325 in words is "twenty-five billion, one hundred sixty-five million, forty thousand, three hundred twenty-five".