25555300065 has 32 divisors (see below), whose sum is σ = 48104098560. Its totient is φ = 12827757312.

The previous prime is 25555300039. The next prime is 25555300091. The reversal of 25555300065 is 56000355552.

It is an interprime number because it is at equal distance from previous prime (25555300039) and next prime (25555300091).

It is not a de Polignac number, because 25555300065 - 2¹⁷ = 25555168993 is a prime.

It is a super-2 number, since 2×25555300065² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5565309 + ... + 5569898.

It is an arithmetic number, because the mean of its divisors is an integer number (1503253080).

Almost surely, 2^25555300065 is an apocalyptic number.

It is an amenable number.

25555300065 is a deficient number, since it is larger than the sum of its proper divisors (22548798495).

25555300065 is a wasteful number, since it uses less digits than its factorization.

25555300065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11135238 (or 11135232 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The spelling of 25555300065 in words is "twenty-five billion, five hundred fifty-five million, three hundred thousand, sixty-five".