25210053311321 has 8 divisors (see below), whose sum is σ = 26087157457920. Its totient is φ = 24333468629008.

The previous prime is 25210053311273. The next prime is 25210053311347. The reversal of 25210053311321 is 12311335001252.

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

It is a cyclic number.

It is not a de Polignac number, because 25210053311321 - 2¹⁰ = 25210053310297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25210053311371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129767321 + ... + 129961446.

It is an arithmetic number, because the mean of its divisors is an integer number (3260894682240).

Almost surely, 2^{25210053311321} is an apocalyptic number.

It is an amenable number.

25210053311321 is a deficient number, since it is larger than the sum of its proper divisors (877104146599).

25210053311321 is a wasteful number, since it uses less digits than its factorization.

25210053311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259732143.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 25210053311321 its reverse (12311335001252), we get a palindrome (37521388312573).

The spelling of 25210053311321 in words is "twenty-five trillion, two hundred ten billion, fifty-three million, three hundred eleven thousand, three hundred twenty-one".