25165341551 has 12 divisors (see below), whose sum is σ = 29285304048. Its totient is φ = 21561940512.

The previous prime is 25165341503. The next prime is 25165341557. The reversal of 25165341551 is 15514356152.

It is not a de Polignac number, because 25165341551 - 2²² = 25161147247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25165341557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30110 + ... + 226356.

It is an arithmetic number, because the mean of its divisors is an integer number (2440442004).

Almost surely, 2^25165341551 is an apocalyptic number.

25165341551 is a deficient number, since it is larger than the sum of its proper divisors (4119962497).

25165341551 is a wasteful number, since it uses less digits than its factorization.

25165341551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198878 (or 198871 counting only the distinct ones).

The product of its digits is 90000, while the sum is 38.

The spelling of 25165341551 in words is "twenty-five billion, one hundred sixty-five million, three hundred forty-one thousand, five hundred fifty-one".