251201125 has 16 divisors (see below), whose sum is σ = 358285824. Its totient is φ = 172251600.

The previous prime is 251201117. The next prime is 251201143. The reversal of 251201125 is 521102152.

It is not a de Polignac number, because 251201125 - 2³ = 251201117 is a prime.

It is a Duffinian number.

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, 142669 + ... + 144418.

It is an arithmetic number, because the mean of its divisors is an integer number (22392864).

Almost surely, 2^251201125 is an apocalyptic number.

251201125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251201125 is a deficient number, since it is larger than the sum of its proper divisors (107084699).

251201125 is an equidigital number, since it uses as much as digits as its factorization.

251201125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287109 (or 287099 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 251201125 is about 15849.3256954358. The cubic root of 251201125 is about 630.9677953028.

Adding to 251201125 its reverse (521102152), we get a palindrome (772303277).

The spelling of 251201125 in words is "two hundred fifty-one million, two hundred one thousand, one hundred twenty-five".