25261551325 has 12 divisors (see below), whose sum is σ = 31483336500. Its totient is φ = 20106652160.

The previous prime is 25261551323. The next prime is 25261551361. The reversal of 25261551325 is 52315516252.

It can be written as a sum of positive squares in 6 ways, for example, as 1913100121 + 23348451204 = 43739^2 + 152802^2 .

It is not a de Polignac number, because 25261551325 - 2¹ = 25261551323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25261551323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2559700 + ... + 2569549.

It is an arithmetic number, because the mean of its divisors is an integer number (2623611375).

Almost surely, 2^25261551325 is an apocalyptic number.

25261551325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25261551325 is a deficient number, since it is larger than the sum of its proper divisors (6221785175).

25261551325 is a wasteful number, since it uses less digits than its factorization.

25261551325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129456 (or 5129451 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The spelling of 25261551325 in words is "twenty-five billion, two hundred sixty-one million, five hundred fifty-one thousand, three hundred twenty-five".