25672061655 has 12 divisors (see below), whose sum is σ = 44498240280. Its totient is φ = 13691766192.

The previous prime is 25672061647. The next prime is 25672061669. The reversal of 25672061655 is 55616027652.

25672061655 is a `hidden beast` number, since 2 + 5 + 6 + 7 + 20 + 616 + 5 + 5 = 666.

It is not a de Polignac number, because 25672061655 - 2³ = 25672061647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 570490259 = 25672061655 / (2 + 5 + 6 + 7 + 2 + 0 + 6 + 1 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 25672061655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285245085 + ... + 285245174.

It is an arithmetic number, because the mean of its divisors is an integer number (3708186690).

Almost surely, 2^25672061655 is an apocalyptic number.

25672061655 is a deficient number, since it is larger than the sum of its proper divisors (18826178625).

25672061655 is a wasteful number, since it uses less digits than its factorization.

25672061655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570490270 (or 570490267 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 25672061655 in words is "twenty-five billion, six hundred seventy-two million, sixty-one thousand, six hundred fifty-five".