57280025 has 12 divisors (see below), whose sum is σ = 77484624. Its totient is φ = 41658000.

The previous prime is 57280007. The next prime is 57280061. The reversal of 57280025 is 52008275.

It is not a de Polignac number, because 57280025 - 2¹² = 57275929 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57280025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103871 + ... + 104420.

It is an arithmetic number, because the mean of its divisors is an integer number (6457052).

Almost surely, 2^57280025 is an apocalyptic number.

57280025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57280025 is a deficient number, since it is larger than the sum of its proper divisors (20204599).

57280025 is a wasteful number, since it uses less digits than its factorization.

57280025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208312 (or 208307 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 57280025 is about 7568.3568229834. The cubic root of 57280025 is about 385.4793040961.

It can be divided in two parts, 57 and 280025, that added together give a palindrome (280082).

The spelling of 57280025 in words is "fifty-seven million, two hundred eighty thousand, twenty-five".