25120264525 has 6 divisors (see below), whose sum is σ = 31149128042. Its totient is φ = 20096211600.

The previous prime is 25120264517. The next prime is 25120264529. The reversal of 25120264525 is 52546202152.

It can be written as a sum of positive squares in 3 ways, for example, as 7534587204 + 17585677321 = 86802^2 + 132611^2 .

It is not a de Polignac number, because 25120264525 - 2³ = 25120264517 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 (25120264529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502405266 + ... + 502405315.

Almost surely, 2^25120264525 is an apocalyptic number.

25120264525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25120264525 is a deficient number, since it is larger than the sum of its proper divisors (6028863517).

25120264525 is a wasteful number, since it uses less digits than its factorization.

25120264525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004810591 (or 1004810586 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 25120264525 its reverse (52546202152), we get a palindrome (77666466677).

The spelling of 25120264525 in words is "twenty-five billion, one hundred twenty million, two hundred sixty-four thousand, five hundred twenty-five".