253400525 has 12 divisors (see below), whose sum is σ = 359104992. Its totient is φ = 173760240.

The previous prime is 253400519. The next prime is 253400551. The reversal of 253400525 is 525004352.

It is a de Polignac number, because none of the positive numbers 2^k-253400525 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253400494 and 253400503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 723827 + ... + 724176.

It is an arithmetic number, because the mean of its divisors is an integer number (29925416).

Almost surely, 2^253400525 is an apocalyptic number.

253400525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253400525 is a deficient number, since it is larger than the sum of its proper divisors (105704467).

253400525 is a wasteful number, since it uses less digits than its factorization.

253400525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448020 (or 1448015 counting only the distinct ones).

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

The square root of 253400525 is about 15918.5591370576. The cubic root of 253400525 is about 632.8039335628.

Adding to 253400525 its reverse (525004352), we get a palindrome (778404877).

The spelling of 253400525 in words is "two hundred fifty-three million, four hundred thousand, five hundred twenty-five".