253405025 has 12 divisors (see below), whose sum is σ = 314420352. Its totient is φ = 202596240.

The previous prime is 253405001. The next prime is 253405027. The reversal of 253405025 is 520504352.

It is not a de Polignac number, because 253405025 - 2¹⁸ = 253142881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253404985 and 253405003.

It is not an unprimeable number, because it can be changed into a prime (253405027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71444 + ... + 74906.

It is an arithmetic number, because the mean of its divisors is an integer number (26201696).

Almost surely, 2^253405025 is an apocalyptic number.

253405025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253405025 is a deficient number, since it is larger than the sum of its proper divisors (61015327).

253405025 is a wasteful number, since it uses less digits than its factorization.

253405025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400 (or 6395 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 253405025 is about 15918.7004808810. The cubic root of 253405025 is about 632.8076794125.

Adding to 253405025 its reverse (520504352), we get a palindrome (773909377).

The spelling of 253405025 in words is "two hundred fifty-three million, four hundred five thousand, twenty-five".