25257443348 has 12 divisors (see below), whose sum is σ = 45395134932. Its totient is φ = 12287404800.

The previous prime is 25257443333. The next prime is 25257443363. The reversal of 25257443348 is 84334475252.

It is an interprime number because it is at equal distance from previous prime (25257443333) and next prime (25257443363).

It can be written as a sum of positive squares in 2 ways, for example, as 15289817104 + 9967626244 = 123652^2 + 99838^2 .

It is a super-3 number, since 3×25257443348³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85329053 + ... + 85329348.

It is an arithmetic number, because the mean of its divisors is an integer number (3782927911).

Almost surely, 2^25257443348 is an apocalyptic number.

It is an amenable number.

25257443348 is a deficient number, since it is larger than the sum of its proper divisors (20137691584).

25257443348 is a wasteful number, since it uses less digits than its factorization.

25257443348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170658442 (or 170658440 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 47.

The spelling of 25257443348 in words is "twenty-five billion, two hundred fifty-seven million, four hundred forty-three thousand, three hundred forty-eight".