25371620831040 has 448 divisors, whose sum is σ = 91267356890880. Its totient is φ = 5917211688960.

The previous prime is 25371620830961. The next prime is 25371620831069. The reversal of 25371620831040 is 4013802617352.

It is a junction number, because it is equal to n+sod(n) for n = 25371620830983 and 25371620831001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34409274 + ... + 35138886.

Almost surely, 2^{25371620831040} is an apocalyptic number.

25371620831040 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 25371620831040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45633678445440).

25371620831040 is an abundant number, since it is smaller than the sum of its proper divisors (65895736059840).

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

25371620831040 is a wasteful number, since it uses less digits than its factorization.

25371620831040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729770 (or 729760 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 25371620831040 in words is "twenty-five trillion, three hundred seventy-one billion, six hundred twenty million, eight hundred thirty-one thousand, forty".