25445041655 has 16 divisors (see below), whose sum is σ = 34018596864. Its totient is φ = 18111749280.

The previous prime is 25445041639. The next prime is 25445041667. The reversal of 25445041655 is 55614054452.

It is not a de Polignac number, because 25445041655 - 2⁴ = 25445041639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4919087 + ... + 4924256.

It is an arithmetic number, because the mean of its divisors is an integer number (2126162304).

Almost surely, 2^25445041655 is an apocalyptic number.

25445041655 is a deficient number, since it is larger than the sum of its proper divisors (8573555209).

25445041655 is a wasteful number, since it uses less digits than its factorization.

25445041655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843406.

The product of its (nonzero) digits is 480000, while the sum is 41.

The spelling of 25445041655 in words is "twenty-five billion, four hundred forty-five million, forty-one thousand, six hundred fifty-five".