25378001755 has 4 divisors (see below), whose sum is σ = 30453602112. Its totient is φ = 20302401400.

The previous prime is 25378001699. The next prime is 25378001771. The reversal of 25378001755 is 55710087352.

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

It is not a de Polignac number, because 25378001755 - 2¹⁹ = 25377477467 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 2537800171 + ... + 2537800180.

It is an arithmetic number, because the mean of its divisors is an integer number (7613400528).

Almost surely, 2^25378001755 is an apocalyptic number.

25378001755 is a deficient number, since it is larger than the sum of its proper divisors (5075600357).

25378001755 is an equidigital number, since it uses as much as digits as its factorization.

25378001755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075600356.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 25378001755 in words is "twenty-five billion, three hundred seventy-eight million, one thousand, seven hundred fifty-five".