25285669657938 has 96 divisors (see below), whose sum is σ = 56129985849600. Its totient is φ = 8224325860608.

The previous prime is 25285669657901. The next prime is 25285669657949. The reversal of 25285669657938 is 83975696658252.

25285669657938 is a `hidden beast` number, since 2 + 5 + 2 + 8 + 5 + 6 + 6 + 9 + 6 + 579 + 38 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 263572356 + ... + 263668272.

It is an arithmetic number, because the mean of its divisors is an integer number (584687352600).

Almost surely, 2^{25285669657938} is an apocalyptic number.

25285669657938 is an abundant number, since it is smaller than the sum of its proper divisors (30844316191662).

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

25285669657938 is a wasteful number, since it uses less digits than its factorization.

25285669657938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98176 (or 98173 counting only the distinct ones).

The product of its digits is 11757312000, while the sum is 81.

The spelling of 25285669657938 in words is "twenty-five trillion, two hundred eighty-five billion, six hundred sixty-nine million, six hundred fifty-seven thousand, nine hundred thirty-eight".