25823067840 has 448 divisors, whose sum is σ = 95682816000. Its totient is φ = 6543618048.

The previous prime is 25823067833. The next prime is 25823067889. The reversal of 25823067840 is 4876032852.

25823067840 is a `hidden beast` number, since 2 + 582 + 3 + 0 + 67 + 8 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 39544954 + ... + 39545606.

Almost surely, 2^25823067840 is an apocalyptic number.

25823067840 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 25823067840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47841408000).

25823067840 is an abundant number, since it is smaller than the sum of its proper divisors (69859748160).

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

25823067840 is a wasteful number, since it uses less digits than its factorization.

25823067840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 25823067840 in words is "twenty-five billion, eight hundred twenty-three million, sixty-seven thousand, eight hundred forty".