253408085 has 16 divisors (see below), whose sum is σ = 356009472. Its totient is φ = 169526400.

The previous prime is 253408033. The next prime is 253408093. The reversal of 253408085 is 580804352.

It is a de Polignac number, because none of the positive numbers 2^k-253408085 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86861 + ... + 89730.

It is an arithmetic number, because the mean of its divisors is an integer number (22250592).

Almost surely, 2^253408085 is an apocalyptic number.

It is an amenable number.

253408085 is a deficient number, since it is larger than the sum of its proper divisors (102601387).

253408085 is a wasteful number, since it uses less digits than its factorization.

253408085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176644.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 253408085 is about 15918.7965939640. The cubic root of 253408085 is about 632.8102265650.

The spelling of 253408085 in words is "two hundred fifty-three million, four hundred eight thousand, eighty-five".