25565845948 has 48 divisors (see below), whose sum is σ = 46448640000. Its totient is φ = 12299788800.

The previous prime is 25565845919. The next prime is 25565845961. The reversal of 25565845948 is 84954856552.

It is a super-3 number, since 3×25565845948³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20468428 + ... + 20469676.

It is an arithmetic number, because the mean of its divisors is an integer number (967680000).

Almost surely, 2^25565845948 is an apocalyptic number.

It is an amenable number.

25565845948 is a deficient number, since it is larger than the sum of its proper divisors (20882794052).

25565845948 is a wasteful number, since it uses less digits than its factorization.

25565845948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2096 counting only the distinct ones).

The product of its digits is 69120000, while the sum is 61.

The spelling of 25565845948 in words is "twenty-five billion, five hundred sixty-five million, eight hundred forty-five thousand, nine hundred forty-eight".