25121266231 has 8 divisors (see below), whose sum is σ = 26624076624. Its totient is φ = 23621243520.

The previous prime is 25121266229. The next prime is 25121266243. The reversal of 25121266231 is 13266212152.

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 25121266231 - 2¹ = 25121266229 is a prime.

It is a super-2 number, since 2×25121266231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25121266193 and 25121266202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121266201) 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, 678345 + ... + 714418.

It is an arithmetic number, because the mean of its divisors is an integer number (3328009578).

Almost surely, 2^25121266231 is an apocalyptic number.

25121266231 is a deficient number, since it is larger than the sum of its proper divisors (1502810393).

25121266231 is a wasteful number, since it uses less digits than its factorization.

25121266231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393841.

The product of its digits is 8640, while the sum is 31.

Adding to 25121266231 its reverse (13266212152), we get a palindrome (38387478383).

The spelling of 25121266231 in words is "twenty-five billion, one hundred twenty-one million, two hundred sixty-six thousand, two hundred thirty-one".