25804196166240 has 168 divisors, whose sum is σ = 91401808222368. Its totient is φ = 6881118946560.

The previous prime is 25804196166187. The next prime is 25804196166299. The reversal of 25804196166240 is 4266169140852.

It is a happy number.

25804196166240 is a `hidden beast` number, since 2 + 5 + 8 + 0 + 4 + 1 + 9 + 6 + 1 + 6 + 624 + 0 = 666.

It is a super-2 number, since 2×25804196166240² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 110498056 + ... + 110731335.

It is an arithmetic number, because the mean of its divisors is an integer number (544058382276).

Almost surely, 2^{25804196166240} is an apocalyptic number.

25804196166240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25804196166240 is an abundant number, since it is smaller than the sum of its proper divisors (65597612056128).

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

25804196166240 is an equidigital number, since it uses as much as digits as its factorization.

25804196166240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221229424 (or 221229401 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 25804196166240 in words is "twenty-five trillion, eight hundred four billion, one hundred ninety-six million, one hundred sixty-six thousand, two hundred forty".