25778761137460 has 24 divisors (see below), whose sum is σ = 54213741975456. Its totient is φ = 10296581867040.

The previous prime is 25778761137443. The next prime is 25778761137533. The reversal of 25778761137460 is 6473116787752.

It is a junction number, because it is equal to n+sod(n) for n = 25778761137392 and 25778761137401.

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, 932647582 + ... + 932675221.

It is an arithmetic number, because the mean of its divisors is an integer number (2258905915644).

Almost surely, 2^{25778761137460} is an apocalyptic number.

25778761137460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25778761137460 is an abundant number, since it is smaller than the sum of its proper divisors (28434980837996).

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

25778761137460 is a wasteful number, since it uses less digits than its factorization.

25778761137460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865323503 (or 1865323501 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 64.

The spelling of 25778761137460 in words is "twenty-five trillion, seven hundred seventy-eight billion, seven hundred sixty-one million, one hundred thirty-seven thousand, four hundred sixty".