25677419768 has 64 divisors (see below), whose sum is σ = 64642475520. Its totient is φ = 9234633600.

The previous prime is 25677419759. The next prime is 25677419777. The reversal of 25677419768 is 86791477652.

It is an interprime number because it is at equal distance from previous prime (25677419759) and next prime (25677419777).

It is a self number, because there is not a number n which added to its sum of digits gives 25677419768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595228 + ... + 1611243.

It is an arithmetic number, because the mean of its divisors is an integer number (1010038680).

Almost surely, 2^25677419768 is an apocalyptic number.

25677419768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25677419768 is an abundant number, since it is smaller than the sum of its proper divisors (38965055752).

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

25677419768 is a wasteful number, since it uses less digits than its factorization.

25677419768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206508 (or 3206504 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 62.

The spelling of 25677419768 in words is "twenty-five billion, six hundred seventy-seven million, four hundred nineteen thousand, seven hundred sixty-eight".