257528083325 has 12 divisors (see below), whose sum is σ = 319424659680. Its totient is φ = 205964507760.

The previous prime is 257528083297. The next prime is 257528083327. The reversal of 257528083325 is 523380825752.

It is not a de Polignac number, because 257528083325 - 2¹² = 257528079229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257528083327) 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, 1358219 + ... + 1536168.

It is an arithmetic number, because the mean of its divisors is an integer number (26618721640).

Almost surely, 2^257528083325 is an apocalyptic number.

257528083325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

257528083325 is a deficient number, since it is larger than the sum of its proper divisors (61896576355).

257528083325 is a wasteful number, since it uses less digits than its factorization.

257528083325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897956 (or 2897951 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 257528083325 in words is "two hundred fifty-seven billion, five hundred twenty-eight million, eighty-three thousand, three hundred twenty-five".