25028050505278 has 4 divisors (see below), whose sum is σ = 37542075757920. Its totient is φ = 12514025252638.

The previous prime is 25028050505191. The next prime is 25028050505399. The reversal of 25028050505278 is 87250505082052.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25028050505278² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257012626318 + ... + 6257012626321.

It is an arithmetic number, because the mean of its divisors is an integer number (9385518939480).

Almost surely, 2^{25028050505278} is an apocalyptic number.

25028050505278 is a deficient number, since it is larger than the sum of its proper divisors (12514025252642).

25028050505278 is a wasteful number, since it uses less digits than its factorization.

25028050505278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12514025252641.

The product of its (nonzero) digits is 2240000, while the sum is 49.

The spelling of 25028050505278 in words is "twenty-five trillion, twenty-eight billion, fifty million, five hundred five thousand, two hundred seventy-eight".