25055552505 has 32 divisors (see below), whose sum is σ = 40821387264. Its totient is φ = 13120966656.

The previous prime is 25055552449. The next prime is 25055552521. The reversal of 25055552505 is 50525555052.

It is not a de Polignac number, because 25055552505 - 2⁹ = 25055551993 is a prime.

It is a super-2 number, since 2×25055552505² (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 31 ways as a sum of consecutive naturals, for example, 116989 + ... + 252581.

It is an arithmetic number, because the mean of its divisors is an integer number (1275668352).

Almost surely, 2^25055552505 is an apocalyptic number.

It is an amenable number.

25055552505 is a deficient number, since it is larger than the sum of its proper divisors (15765834759).

25055552505 is a wasteful number, since it uses less digits than its factorization.

25055552505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135825.

The product of its (nonzero) digits is 312500, while the sum is 39.

The spelling of 25055552505 in words is "twenty-five billion, fifty-five million, five hundred fifty-two thousand, five hundred five".