25401525336 has 96 divisors (see below), whose sum is σ = 75406144320. Its totient is φ = 7660900800.

The previous prime is 25401525323. The next prime is 25401525337. The reversal of 25401525336 is 63352510452.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25401525336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401525337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91111 + ... + 243113.

It is an arithmetic number, because the mean of its divisors is an integer number (785480670).

Almost surely, 2^25401525336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25401525336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37703072160).

25401525336 is an abundant number, since it is smaller than the sum of its proper divisors (50004618984).

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

25401525336 is a wasteful number, since it uses less digits than its factorization.

25401525336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152237 (or 152230 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 25401525336 in words is "twenty-five billion, four hundred one million, five hundred twenty-five thousand, three hundred thirty-six".