25263351378 has 24 divisors (see below), whose sum is σ = 54748948800. Its totient is φ = 8419319064.

The previous prime is 25263351359. The next prime is 25263351391. The reversal of 25263351378 is 87315336252.

25263351378 is a `hidden beast` number, since 2 + 5 + 2 + 63 + 3 + 513 + 78 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61798 + ... + 233121.

It is an arithmetic number, because the mean of its divisors is an integer number (2281206200).

Almost surely, 2^25263351378 is an apocalyptic number.

25263351378 is an abundant number, since it is smaller than the sum of its proper divisors (29485597422).

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

25263351378 is a wasteful number, since it uses less digits than its factorization.

25263351378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299686 (or 299683 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The spelling of 25263351378 in words is "twenty-five billion, two hundred sixty-three million, three hundred fifty-one thousand, three hundred seventy-eight".