25722045535 has 4 divisors (see below), whose sum is σ = 30866454648. Its totient is φ = 20577636424.

The previous prime is 25722045499. The next prime is 25722045563. The reversal of 25722045535 is 53554022752.

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

It is a cyclic number.

It is not a de Polignac number, because 25722045535 - 2¹³ = 25722037343 is a prime.

It is a super-2 number, since 2×25722045535² (a number of 22 digits) contains 22 as substring.

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 Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572204549 + ... + 2572204558.

It is an arithmetic number, because the mean of its divisors is an integer number (7716613662).

Almost surely, 2^25722045535 is an apocalyptic number.

25722045535 is a deficient number, since it is larger than the sum of its proper divisors (5144409113).

25722045535 is an equidigital number, since it uses as much as digits as its factorization.

25722045535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144409112.

The product of its (nonzero) digits is 420000, while the sum is 40.

The spelling of 25722045535 in words is "twenty-five billion, seven hundred twenty-two million, forty-five thousand, five hundred thirty-five".