256257725350 has 48 divisors (see below), whose sum is σ = 520141998960. Its totient is φ = 93153843200.

The previous prime is 256257725333. The next prime is 256257725371. The reversal of 256257725350 is 53527752652.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 256257725294 and 256257725303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1623534 + ... + 1774366.

It is an arithmetic number, because the mean of its divisors is an integer number (10836291645).

Almost surely, 2^256257725350 is an apocalyptic number.

256257725350 is an abundant number, since it is smaller than the sum of its proper divisors (263884273610).

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

256257725350 is a wasteful number, since it uses less digits than its factorization.

256257725350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153945 (or 153940 counting only the distinct ones).

The product of its (nonzero) digits is 4410000, while the sum is 49.

The spelling of 256257725350 in words is "two hundred fifty-six billion, two hundred fifty-seven million, seven hundred twenty-five thousand, three hundred fifty".