25780144568 has 16 divisors (see below), whose sum is σ = 49644197880. Its totient is φ = 12541691808.

The previous prime is 25780144567. The next prime is 25780144583. The reversal of 25780144568 is 86544108752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25780144567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43547246 + ... + 43547837.

Almost surely, 2^25780144568 is an apocalyptic number.

It is an amenable number.

25780144568 is a deficient number, since it is larger than the sum of its proper divisors (23864053312).

25780144568 is a wasteful number, since it uses less digits than its factorization.

25780144568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87095126 (or 87095122 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 25780144568 in words is "twenty-five billion, seven hundred eighty million, one hundred forty-four thousand, five hundred sixty-eight".