25502775506 has 32 divisors (see below), whose sum is σ = 41479119360. Its totient is φ = 11690100864.

The previous prime is 25502775457. The next prime is 25502775509. The reversal of 25502775506 is 60557720552.

It is not an unprimeable number, because it can be changed into a prime (25502775509) by changing a digit.

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, 2563550 + ... + 2573478.

It is an arithmetic number, because the mean of its divisors is an integer number (1296222480).

Almost surely, 2^25502775506 is an apocalyptic number.

25502775506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25502775506 is a deficient number, since it is larger than the sum of its proper divisors (15976343854).

25502775506 is a wasteful number, since it uses less digits than its factorization.

25502775506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610.

The product of its (nonzero) digits is 735000, while the sum is 44.

The spelling of 25502775506 in words is "twenty-five billion, five hundred two million, seven hundred seventy-five thousand, five hundred six".