25428153437478 has 72 divisors (see below), whose sum is σ = 62829694385640. Its totient is φ = 7370479226880.

The previous prime is 25428153437411. The next prime is 25428153437537. The reversal of 25428153437478 is 87473435182452.

25428153437478 is a `hidden beast` number, since 2 + 5 + 4 + 2 + 8 + 153 + 4 + 3 + 7 + 478 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 121279963 + ... + 121489446.

It is an arithmetic number, because the mean of its divisors is an integer number (872634644245).

Almost surely, 2^{25428153437478} is an apocalyptic number.

25428153437478 is an abundant number, since it is smaller than the sum of its proper divisors (37401540948162).

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

25428153437478 is a wasteful number, since it uses less digits than its factorization.

25428153437478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242769474 (or 242769448 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 63.

The spelling of 25428153437478 in words is "twenty-five trillion, four hundred twenty-eight billion, one hundred fifty-three million, four hundred thirty-seven thousand, four hundred seventy-eight".