25777580025 has 12 divisors (see below), whose sum is σ = 42618932432. Its totient is φ = 13748042640.

The previous prime is 25777580021. The next prime is 25777580047. The reversal of 25777580025 is 52008577752.

It is not a de Polignac number, because 25777580025 - 2² = 25777580021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25777580021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171850459 + ... + 171850608.

Almost surely, 2^25777580025 is an apocalyptic number.

25777580025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25777580025 is a deficient number, since it is larger than the sum of its proper divisors (16841352407).

25777580025 is a wasteful number, since it uses less digits than its factorization.

25777580025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343701080 (or 343701075 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 48.

The spelling of 25777580025 in words is "twenty-five billion, seven hundred seventy-seven million, five hundred eighty thousand, twenty-five".