25401234406000 has 160 divisors (see below), whose sum is σ = 64977734016000. Its totient is φ = 9577357574400.

The previous prime is 25401234405979. The next prime is 25401234406003. The reversal of 25401234406000 is 60443210452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401234406003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5882469 + ... + 9241531.

It is an arithmetic number, because the mean of its divisors is an integer number (406110837600).

Almost surely, 2^{25401234406000} is an apocalyptic number.

25401234406000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25401234406000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32488867008000).

25401234406000 is an abundant number, since it is smaller than the sum of its proper divisors (39576499610000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25401234406000 is a wasteful number, since it uses less digits than its factorization.

25401234406000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359304 (or 3359288 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 25401234406000 its reverse (60443210452), we get a palindrome (25461677616452).

The spelling of 25401234406000 in words is "twenty-five trillion, four hundred one billion, two hundred thirty-four million, four hundred six thousand".