252400025 has 12 divisors (see below), whose sum is σ = 313732524. Its totient is φ = 201432000.

The previous prime is 252400019. The next prime is 252400039. The reversal of 252400025 is 520004252.

252400025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 151979584 + 100420441 = 12328^2 + 10021^2 .

It is not a de Polignac number, because 252400025 - 2¹⁰ = 252399001 is a prime.

It is a Duffinian 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, 1466 + ... + 22515.

It is an arithmetic number, because the mean of its divisors is an integer number (26144377).

Almost surely, 2^252400025 is an apocalyptic number.

252400025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252400025 is a deficient number, since it is larger than the sum of its proper divisors (61332499).

252400025 is a wasteful number, since it uses less digits than its factorization.

252400025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24412 (or 24407 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 252400025 is about 15887.1024733902. The cubic root of 252400025 is about 631.9700028824.

Adding to 252400025 its reverse (520004252), we get a palindrome (772404277).

The spelling of 252400025 in words is "two hundred fifty-two million, four hundred thousand, twenty-five".