25789866480 has 160 divisors (see below), whose sum is σ = 101522073600. Its totient is φ = 5894823168.

The previous prime is 25789866469. The next prime is 25789866497. The reversal of 25789866480 is 8466898752.

25789866480 is a `hidden beast` number, since 2 + 5 + 7 + 8 + 98 + 66 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 837720 + ... + 867959.

It is an arithmetic number, because the mean of its divisors is an integer number (634512960).

Almost surely, 2^25789866480 is an apocalyptic number.

25789866480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25789866480 is an abundant number, since it is smaller than the sum of its proper divisors (75732207120).

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

25789866480 is a wasteful number, since it uses less digits than its factorization.

25789866480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705708 (or 1705696 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 25789866480 in words is "twenty-five billion, seven hundred eighty-nine million, eight hundred sixty-six thousand, four hundred eighty".