25938742788 has 36 divisors (see below), whose sum is σ = 74934146560. Its totient is φ = 7411069296.

The previous prime is 25938742787. The next prime is 25938742801. The reversal of 25938742788 is 88724783952.

25938742788 is a `hidden beast` number, since 2 + 59 + 3 + 87 + 427 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (25938742787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51465508 + ... + 51466011.

Almost surely, 2^25938742788 is an apocalyptic number.

25938742788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25938742788 is an abundant number, since it is smaller than the sum of its proper divisors (48995403772).

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

25938742788 is a wasteful number, since it uses less digits than its factorization.

25938742788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102931536 (or 102931531 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The spelling of 25938742788 in words is "twenty-five billion, nine hundred thirty-eight million, seven hundred forty-two thousand, seven hundred eighty-eight".