25575501086 has 4 divisors (see below), whose sum is σ = 38363251632. Its totient is φ = 12787750542.

The previous prime is 25575501037. The next prime is 25575501113. The reversal of 25575501086 is 68010557552.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393875270 + ... + 6393875273.

It is an arithmetic number, because the mean of its divisors is an integer number (9590812908).

Almost surely, 2^25575501086 is an apocalyptic number.

25575501086 is a deficient number, since it is larger than the sum of its proper divisors (12787750546).

25575501086 is a wasteful number, since it uses less digits than its factorization.

25575501086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12787750545.

The product of its (nonzero) digits is 420000, while the sum is 44.

The spelling of 25575501086 in words is "twenty-five billion, five hundred seventy-five million, five hundred one thousand, eighty-six".