251140125 has 16 divisors (see below), whose sum is σ = 417897792. Its totient is φ = 133941200.

The previous prime is 251140093. The next prime is 251140159. The reversal of 251140125 is 521041152.

251140125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 251140125 - 2⁵ = 251140093 is a prime.

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, 334479 + ... + 335228.

It is an arithmetic number, because the mean of its divisors is an integer number (26118612).

Almost surely, 2^251140125 is an apocalyptic number.

251140125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251140125 is a deficient number, since it is larger than the sum of its proper divisors (166757667).

251140125 is an equidigital number, since it uses as much as digits as its factorization.

251140125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669725 (or 669715 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 251140125 is about 15847.4012065070. The cubic root of 251140125 is about 630.9167178360.

Adding to 251140125 its reverse (521041152), we get a palindrome (772181277).

The spelling of 251140125 in words is "two hundred fifty-one million, one hundred forty thousand, one hundred twenty-five".