25121422201231 has 4 divisors (see below), whose sum is σ = 25261765342200. Its totient is φ = 24981079060264.

The previous prime is 25121422201219. The next prime is 25121422201279. The reversal of 25121422201231 is 13210222412152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25121422201231 - 2⁵ = 25121422201199 is a prime.

It is a super-2 number, since 2×25121422201231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25121422201231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121422201531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70171570216 + ... + 70171570573.

It is an arithmetic number, because the mean of its divisors is an integer number (6315441335550).

Almost surely, 2^{25121422201231} is an apocalyptic number.

25121422201231 is a deficient number, since it is larger than the sum of its proper divisors (140343140969).

25121422201231 is a wasteful number, since it uses less digits than its factorization.

25121422201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140343140968.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 25121422201231 its reverse (13210222412152), we get a palindrome (38331644613383).

The spelling of 25121422201231 in words is "twenty-five trillion, one hundred twenty-one billion, four hundred twenty-two million, two hundred one thousand, two hundred thirty-one".