25452444511 has 4 divisors (see below), whose sum is σ = 27410324872. Its totient is φ = 23494564152.

The previous prime is 25452444503. The next prime is 25452444527. The reversal of 25452444511 is 11544425452.

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 25452444511 - 2³ = 25452444503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25452444541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978940161 + ... + 978940186.

It is an arithmetic number, because the mean of its divisors is an integer number (6852581218).

Almost surely, 2^25452444511 is an apocalyptic number.

25452444511 is a deficient number, since it is larger than the sum of its proper divisors (1957880361).

25452444511 is a wasteful number, since it uses less digits than its factorization.

25452444511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957880360.

The product of its digits is 128000, while the sum is 37.

Adding to 25452444511 its reverse (11544425452), we get a palindrome (36996869963).

The spelling of 25452444511 in words is "twenty-five billion, four hundred fifty-two million, four hundred forty-four thousand, five hundred eleven".