25220533445 has 16 divisors (see below), whose sum is σ = 31468981248. Its totient is φ = 19383035520.

The previous prime is 25220533439. The next prime is 25220533453. The reversal of 25220533445 is 54433502252.

It is not a de Polignac number, because 25220533445 - 2⁶ = 25220533381 is a prime.

It is a Duffinian 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 in 15 ways as a sum of consecutive naturals, for example, 572609 + ... + 615078.

It is an arithmetic number, because the mean of its divisors is an integer number (1966811328).

Almost surely, 2^25220533445 is an apocalyptic number.

It is an amenable number.

25220533445 is a deficient number, since it is larger than the sum of its proper divisors (6248447803).

25220533445 is a wasteful number, since it uses less digits than its factorization.

25220533445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187860.

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 25220533445 in words is "twenty-five billion, two hundred twenty million, five hundred thirty-three thousand, four hundred forty-five".