25065504405 has 32 divisors (see below), whose sum is σ = 45765254400. Its totient is φ = 13006961856.

The previous prime is 25065504389. The next prime is 25065504439. The reversal of 25065504405 is 50440556052.

25065504405 is a `hidden beast` number, since 2 + 50 + 65 + 504 + 40 + 5 = 666.

It is not a de Polignac number, because 25065504405 - 2⁴ = 25065504389 is a prime.

It is a super-2 number, since 2×25065504405² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25065504405.

It is a congruent number.

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, 2504065 + ... + 2514054.

It is an arithmetic number, because the mean of its divisors is an integer number (1430164200).

Almost surely, 2^25065504405 is an apocalyptic number.

It is an amenable number.

25065504405 is a deficient number, since it is larger than the sum of its proper divisors (20699749995).

25065504405 is a wasteful number, since it uses less digits than its factorization.

25065504405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018170 (or 5018164 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 25065504405 in words is "twenty-five billion, sixty-five million, five hundred four thousand, four hundred five".