25261760436 has 96 divisors (see below), whose sum is σ = 68158516608. Its totient is φ = 7197020160.

The previous prime is 25261760431. The next prime is 25261760473. The reversal of 25261760436 is 63406716252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25261760431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2267616 + ... + 2278728.

It is an arithmetic number, because the mean of its divisors is an integer number (709984548).

Almost surely, 2^25261760436 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 25261760436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34079258304).

25261760436 is an abundant number, since it is smaller than the sum of its proper divisors (42896756172).

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

25261760436 is a wasteful number, since it uses less digits than its factorization.

25261760436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12161 (or 12159 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 25261760436 in words is "twenty-five billion, two hundred sixty-one million, seven hundred sixty thousand, four hundred thirty-six".