25445041654 has 4 divisors (see below), whose sum is σ = 38167562484. Its totient is φ = 12722520826.

The previous prime is 25445041639. The next prime is 25445041667. The reversal of 25445041654 is 45614054452.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361260412 + ... + 6361260415.

It is an arithmetic number, because the mean of its divisors is an integer number (9541890621).

Almost surely, 2^25445041654 is an apocalyptic number.

25445041654 is a deficient number, since it is larger than the sum of its proper divisors (12722520830).

25445041654 is a wasteful number, since it uses less digits than its factorization.

25445041654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722520829.

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 25445041654 in words is "twenty-five billion, four hundred forty-five million, forty-one thousand, six hundred fifty-four".