257260437044 has 12 divisors (see below), whose sum is σ = 484836977604. Its totient is φ = 118735586304.

The previous prime is 257260437041. The next prime is 257260437047. The reversal of 257260437044 is 440734062752.

It is an interprime number because it is at equal distance from previous prime (257260437041) and next prime (257260437047).

It can be written as a sum of positive squares in 2 ways, for example, as 115913011600 + 141347425444 = 340460^2 + 375962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257260436986 and 257260437004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257260437041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2473657997 + ... + 2473658100.

It is an arithmetic number, because the mean of its divisors is an integer number (40403081467).

Almost surely, 2^257260437044 is an apocalyptic number.

It is an amenable number.

257260437044 is a deficient number, since it is larger than the sum of its proper divisors (227576540560).

257260437044 is a wasteful number, since it uses less digits than its factorization.

257260437044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947316114 (or 4947316112 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 44.

Adding to 257260437044 its reverse (440734062752), we get a palindrome (697994499796).

The spelling of 257260437044 in words is "two hundred fifty-seven billion, two hundred sixty million, four hundred thirty-seven thousand, forty-four".