25278030305012 has 24 divisors (see below), whose sum is σ = 45386664914976. Its totient is φ = 12311987794848.

The previous prime is 25278030305009. The next prime is 25278030305107. The reversal of 25278030305012 is 21050303087252.

It is a super-2 number, since 2×25278030305012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196940258 + ... + 197068569.

It is an arithmetic number, because the mean of its divisors is an integer number (1891111038124).

Almost surely, 2^{25278030305012} is an apocalyptic number.

It is an amenable number.

25278030305012 is a deficient number, since it is larger than the sum of its proper divisors (20108634609964).

25278030305012 is a wasteful number, since it uses less digits than its factorization.

25278030305012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394009247 (or 394009245 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 25278030305012 in words is "twenty-five trillion, two hundred seventy-eight billion, thirty million, three hundred five thousand, twelve".