25351151121 has 16 divisors (see below), whose sum is σ = 37591171200. Its totient is φ = 16885507824.

The previous prime is 25351151083. The next prime is 25351151123. The reversal of 25351151121 is 12115115352.

It is a happy number.

25351151121 is a `hidden beast` number, since 2 + 535 + 1 + 1 + 5 + 1 + 121 = 666.

It is not a de Polignac number, because 25351151121 - 2¹⁴ = 25351134737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25351151123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 393381 + ... + 453266.

It is an arithmetic number, because the mean of its divisors is an integer number (2349448200).

Almost surely, 2^25351151121 is an apocalyptic number.

It is an amenable number.

25351151121 is a deficient number, since it is larger than the sum of its proper divisors (12240020079).

25351151121 is a wasteful number, since it uses less digits than its factorization.

25351151121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847765 (or 847759 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

Adding to 25351151121 its reverse (12115115352), we get a palindrome (37466266473).

The spelling of 25351151121 in words is "twenty-five billion, three hundred fifty-one million, one hundred fifty-one thousand, one hundred twenty-one".