25028278025780 has 48 divisors (see below), whose sum is σ = 53678744098560. Its totient is φ = 9798108271488.

The previous prime is 25028278025771. The next prime is 25028278025887. The reversal of 25028278025780 is 8752087282052.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52150151 + ... + 52627889.

It is an arithmetic number, because the mean of its divisors is an integer number (1118307168720).

Almost surely, 2^{25028278025780} is an apocalyptic number.

25028278025780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25028278025780 is an abundant number, since it is smaller than the sum of its proper divisors (28650466072780).

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

25028278025780 is a wasteful number, since it uses less digits than its factorization.

25028278025780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533528 (or 533526 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 56.

The spelling of 25028278025780 in words is "twenty-five trillion, twenty-eight billion, two hundred seventy-eight million, twenty-five thousand, seven hundred eighty".