257553250780 has 48 divisors (see below), whose sum is σ = 638067419136. Its totient is φ = 85455455040.

The previous prime is 257553250777. The next prime is 257553250783. The reversal of 257553250780 is 87052355752.

It is an interprime number because it is at equal distance from previous prime (257553250777) and next prime (257553250783).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257553250783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29667694 + ... + 29676373.

It is an arithmetic number, because the mean of its divisors is an integer number (13293071232).

Almost surely, 2^257553250780 is an apocalyptic number.

257553250780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257553250780 is an abundant number, since it is smaller than the sum of its proper divisors (380514168356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257553250780 is a wasteful number, since it uses less digits than its factorization.

257553250780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59344114 (or 59344112 counting only the distinct ones).

The product of its (nonzero) digits is 2940000, while the sum is 49.

The spelling of 257553250780 in words is "two hundred fifty-seven billion, five hundred fifty-three million, two hundred fifty thousand, seven hundred eighty".