25578057775 has 6 divisors (see below), whose sum is σ = 31716791672. Its totient is φ = 20462446200.

The previous prime is 25578057731. The next prime is 25578057781. The reversal of 25578057775 is 57775087552.

It is not a de Polignac number, because 25578057775 - 2¹⁵ = 25578025007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511561131 + ... + 511561180.

Almost surely, 2^25578057775 is an apocalyptic number.

25578057775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25578057775 is a deficient number, since it is larger than the sum of its proper divisors (6138733897).

25578057775 is a wasteful number, since it uses less digits than its factorization.

25578057775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023122321 (or 1023122316 counting only the distinct ones).

The product of its (nonzero) digits is 24010000, while the sum is 58.

The spelling of 25578057775 in words is "twenty-five billion, five hundred seventy-eight million, fifty-seven thousand, seven hundred seventy-five".