25870035840 has 256 divisors, whose sum is σ = 90974534400. Its totient is φ = 6200606720.

The previous prime is 25870035781. The next prime is 25870035871. The reversal of 25870035840 is 4853007852.

It is a junction number, because it is equal to n+sod(n) for n = 25870035792 and 25870035801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1872799 + ... + 1886561.

It is an arithmetic number, because the mean of its divisors is an integer number (355369275).

Almost surely, 2^25870035840 is an apocalyptic number.

25870035840 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 25870035840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45487267200).

25870035840 is an abundant number, since it is smaller than the sum of its proper divisors (65104498560).

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

25870035840 is a wasteful number, since it uses less digits than its factorization.

25870035840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13885 (or 13873 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 25870035840 in words is "twenty-five billion, eight hundred seventy million, thirty-five thousand, eight hundred forty".