25771487398560 has 192 divisors, whose sum is σ = 91075937621760. Its totient is φ = 6805674224640.

The previous prime is 25771487398357. The next prime is 25771487398567. The reversal of 25771487398560 is 6589378417752.

25771487398560 is a `hidden beast` number, since 2 + 5 + 7 + 7 + 1 + 487 + 3 + 9 + 85 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (25771487398567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28514371 + ... + 29404290.

It is an arithmetic number, because the mean of its divisors is an integer number (474353841780).

It is a 1-persistent number, because it is pandigital, but 2⋅25771487398560 = 51542974797120 is not.

Almost surely, 2^{25771487398560} is an apocalyptic number.

25771487398560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25771487398560 is an abundant number, since it is smaller than the sum of its proper divisors (65304450223200).

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

25771487398560 is a wasteful number, since it uses less digits than its factorization.

25771487398560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57918788 (or 57918774 counting only the distinct ones).

The product of its (nonzero) digits is 711244800, while the sum is 72.

The spelling of 25771487398560 in words is "twenty-five trillion, seven hundred seventy-one billion, four hundred eighty-seven million, three hundred ninety-eight thousand, five hundred sixty".