25745623247880 has 384 divisors, whose sum is σ = 90209246400000. Its totient is φ = 6347503429632.

The previous prime is 25745623247863. The next prime is 25745623247969. The reversal of 25745623247880 is 8874232654752.

It is a happy number.

25745623247880 is a `hidden beast` number, since 2 + 5 + 7 + 4 + 56 + 2 + 32 + 478 + 80 = 666.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 112081786 + ... + 112311254.

It is an arithmetic number, because the mean of its divisors is an integer number (234919912500).

Almost surely, 2^{25745623247880} is an apocalyptic number.

25745623247880 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 25745623247880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45104623200000).

25745623247880 is an abundant number, since it is smaller than the sum of its proper divisors (64463623152120).

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

25745623247880 is a wasteful number, since it uses less digits than its factorization.

25745623247880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229901 (or 229894 counting only the distinct ones).

The product of its (nonzero) digits is 180633600, while the sum is 63.

The spelling of 25745623247880 in words is "twenty-five trillion, seven hundred forty-five billion, six hundred twenty-three million, two hundred forty-seven thousand, eight hundred eighty".