257225616148 has 6 divisors (see below), whose sum is σ = 450144828266. Its totient is φ = 128612808072.

The previous prime is 257225616127. The next prime is 257225616187. The reversal of 257225616148 is 841616522752.

It can be written as a sum of positive squares in only one way, i.e., 209569852944 + 47655763204 = 457788^2 + 218302^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32153202015 + ... + 32153202022.

Almost surely, 2^257225616148 is an apocalyptic number.

It is an amenable number.

257225616148 is a deficient number, since it is larger than the sum of its proper divisors (192919212118).

257225616148 is a wasteful number, since it uses less digits than its factorization.

257225616148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64306404041 (or 64306404039 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 49.

The spelling of 257225616148 in words is "two hundred fifty-seven billion, two hundred twenty-five million, six hundred sixteen thousand, one hundred forty-eight".