25442379873936 has 135 divisors (see below), whose sum is σ = 75151506653379. Its totient is φ = 8034072578496.

The previous prime is 25442379873853. The next prime is 25442379873943. The reversal of 25442379873936 is 63937897324452.

The square root of 25442379873936 is 5044044.

It is a perfect power (a square), and thus also a powerful number.

25442379873936 is a `hidden beast` number, since 2 + 5 + 442 + 3 + 7 + 98 + 7 + 3 + 93 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1150030971 + ... + 1150053093.

Almost surely, 2^{25442379873936} is an apocalyptic number.

25442379873936 is the 5044044-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25442379873936

25442379873936 is an abundant number, since it is smaller than the sum of its proper divisors (49709126779443).

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

25442379873936 is an frugal number, since it uses more digits than its factorization.

25442379873936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44298 (or 22147 counting only the distinct ones).

The product of its digits is 1646023680, while the sum is 72.

The spelling of 25442379873936 in words is "twenty-five trillion, four hundred forty-two billion, three hundred seventy-nine million, eight hundred seventy-three thousand, nine hundred thirty-six".