25005555505 has 8 divisors (see below), whose sum is σ = 34293333312. Its totient is φ = 17146666608.

The previous prime is 25005555481. The next prime is 25005555517. The reversal of 25005555505 is 50555550052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25005555505 - 2¹³ = 25005547313 is a prime.

It is a super-2 number, since 2×25005555505² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357222187 + ... + 357222256.

It is an arithmetic number, because the mean of its divisors is an integer number (4286666664).

Almost surely, 2^25005555505 is an apocalyptic number.

It is an amenable number.

25005555505 is a deficient number, since it is larger than the sum of its proper divisors (9287777807).

25005555505 is an equidigital number, since it uses as much as digits as its factorization.

25005555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714444455.

The product of its (nonzero) digits is 156250, while the sum is 37.

The spelling of 25005555505 in words is "twenty-five billion, five million, five hundred fifty-five thousand, five hundred five".