25828252505 has 32 divisors (see below), whose sum is σ = 34915605120. Its totient is φ = 18178836480.

The previous prime is 25828252493. The next prime is 25828252511. The reversal of 25828252505 is 50525282852.

It is not a de Polignac number, because 25828252505 - 2²⁰ = 25827203929 is a prime.

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, 207689 + ... + 307881.

It is an arithmetic number, because the mean of its divisors is an integer number (1091112660).

Almost surely, 2^25828252505 is an apocalyptic number.

It is an amenable number.

25828252505 is a deficient number, since it is larger than the sum of its proper divisors (9087352615).

25828252505 is a wasteful number, since it uses less digits than its factorization.

25828252505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100361.

The product of its (nonzero) digits is 640000, while the sum is 44.

The spelling of 25828252505 in words is "twenty-five billion, eight hundred twenty-eight million, two hundred fifty-two thousand, five hundred five".