25402552505 has 16 divisors (see below), whose sum is σ = 34027608384. Its totient is φ = 18044940480.

The previous prime is 25402552453. The next prime is 25402552529. The reversal of 25402552505 is 50525520452.

It is not a de Polignac number, because 25402552505 - 2⁸ = 25402552249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5368154 + ... + 5372883.

It is an arithmetic number, because the mean of its divisors is an integer number (2126725524).

Almost surely, 2^25402552505 is an apocalyptic number.

It is an amenable number.

25402552505 is a deficient number, since it is larger than the sum of its proper divisors (8625055879).

25402552505 is a wasteful number, since it uses less digits than its factorization.

25402552505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10741096.

The product of its (nonzero) digits is 100000, while the sum is 35.

The spelling of 25402552505 in words is "twenty-five billion, four hundred two million, five hundred fifty-two thousand, five hundred five".