25254133121 has 8 divisors (see below), whose sum is σ = 28864059840. Its totient is φ = 21644754768.

The previous prime is 25254133111. The next prime is 25254133127. The reversal of 25254133121 is 12133145252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25254133121 - 2¹⁸ = 25253870977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25254133127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33146 + ... + 227171.

It is an arithmetic number, because the mean of its divisors is an integer number (3608007480).

Almost surely, 2^25254133121 is an apocalyptic number.

It is an amenable number.

25254133121 is a deficient number, since it is larger than the sum of its proper divisors (3609926719).

25254133121 is a wasteful number, since it uses less digits than its factorization.

25254133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274183.

The product of its digits is 7200, while the sum is 29.

Adding to 25254133121 its reverse (12133145252), we get a palindrome (37387278373).

The spelling of 25254133121 in words is "twenty-five billion, two hundred fifty-four million, one hundred thirty-three thousand, one hundred twenty-one".