256125440002 has 8 divisors (see below), whose sum is σ = 385910977536. Its totient is φ = 127488447492.

The previous prime is 256125439957. The next prime is 256125440059. The reversal of 256125440002 is 200044521652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287135698 + ... + 287136589.

It is an arithmetic number, because the mean of its divisors is an integer number (48238872192).

Almost surely, 2^256125440002 is an apocalyptic number.

256125440002 is a deficient number, since it is larger than the sum of its proper divisors (129785537534).

256125440002 is a wasteful number, since it uses less digits than its factorization.

256125440002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574272512.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 256125440002 its reverse (200044521652), we get a palindrome (456169961654).

The spelling of 256125440002 in words is "two hundred fifty-six billion, one hundred twenty-five million, four hundred forty thousand, two".