251153425 has 6 divisors (see below), whose sum is σ = 311430278. Its totient is φ = 200922720.

The previous prime is 251153417. The next prime is 251153429. The reversal of 251153425 is 524351152.

It can be written as a sum of positive squares in 3 ways, for example, as 24681024 + 226472401 = 4968^2 + 15049^2 .

It is not a de Polignac number, because 251153425 - 2³ = 251153417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 251153393 and 251153402.

It is not an unprimeable number, because it can be changed into a prime (251153429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5023044 + ... + 5023093.

Almost surely, 2^251153425 is an apocalyptic number.

251153425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251153425 is a deficient number, since it is larger than the sum of its proper divisors (60276853).

251153425 is a wasteful number, since it uses less digits than its factorization.

251153425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10046147 (or 10046142 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 251153425 is about 15847.8208281139. The cubic root of 251153425 is about 630.9278551034.

The spelling of 251153425 in words is "two hundred fifty-one million, one hundred fifty-three thousand, four hundred twenty-five".