25163331345 has 32 divisors (see below), whose sum is σ = 44741414400. Its totient is φ = 13418462592.

The previous prime is 25163331317. The next prime is 25163331367. The reversal of 25163331345 is 54313336152.

25163331345 is a `hidden beast` number, since 2 + 5 + 1 + 633 + 3 + 13 + 4 + 5 = 666.

It is not a de Polignac number, because 25163331345 - 2⁵ = 25163331313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1622136 + ... + 1637574.

It is an arithmetic number, because the mean of its divisors is an integer number (1398169200).

Almost surely, 2^25163331345 is an apocalyptic number.

It is an amenable number.

25163331345 is a deficient number, since it is larger than the sum of its proper divisors (19578083055).

25163331345 is a wasteful number, since it uses less digits than its factorization.

25163331345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27526 (or 27520 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

Adding to 25163331345 its reverse (54313336152), we get a palindrome (79476667497).

The spelling of 25163331345 in words is "twenty-five billion, one hundred sixty-three million, three hundred thirty-one thousand, three hundred forty-five".