256002465 has 16 divisors (see below), whose sum is σ = 409845888. Its totient is φ = 136454016.

The previous prime is 256002463. The next prime is 256002493. The reversal of 256002465 is 564200652.

It is not a de Polignac number, because 256002465 - 2¹ = 256002463 is a prime.

It is a super-3 number, since 3×256002465³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256002463) 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, 28332 + ... + 36258.

It is an arithmetic number, because the mean of its divisors is an integer number (25615368).

Almost surely, 2^256002465 is an apocalyptic number.

It is an amenable number.

256002465 is a deficient number, since it is larger than the sum of its proper divisors (153843423).

256002465 is a wasteful number, since it uses less digits than its factorization.

256002465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10088.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 256002465 is about 16000.0770310646. The cubic root of 256002465 is about 634.9624587722.

The spelling of 256002465 in words is "two hundred fifty-six million, two thousand, four hundred sixty-five".