285253255440 has 120 divisors (see below), whose sum is σ = 961056577728. Its totient is φ = 75822885120.

The previous prime is 285253255429. The next prime is 285253255451. The reversal of 285253255440 is 44552352582.

285253255440 is a `hidden beast` number, since 2 + 8 + 5 + 2 + 53 + 2 + 554 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (285253255429) and next prime (285253255451).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 413034 + ... + 860873.

Almost surely, 2^285253255440 is an apocalyptic number.

285253255440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285253255440 is an abundant number, since it is smaller than the sum of its proper divisors (675803322288).

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

285253255440 is a wasteful number, since it uses less digits than its factorization.

285253255440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274237 (or 1274228 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 285253255440 in words is "two hundred eighty-five billion, two hundred fifty-three million, two hundred fifty-five thousand, four hundred forty".