251675225 has 24 divisors (see below), whose sum is σ = 331407360. Its totient is φ = 188939520.

The previous prime is 251675213. The next prime is 251675227. The reversal of 251675225 is 522576152.

It is not a de Polignac number, because 251675225 - 2¹⁰ = 251674201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251675227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196136 + ... + 197414.

It is an arithmetic number, because the mean of its divisors is an integer number (13808640).

Almost surely, 2^251675225 is an apocalyptic number.

251675225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251675225 is a deficient number, since it is larger than the sum of its proper divisors (79732135).

251675225 is a wasteful number, since it uses less digits than its factorization.

251675225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1764 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 251675225 is about 15864.2751173825. The cubic root of 251675225 is about 631.3644944756.

The spelling of 251675225 in words is "two hundred fifty-one million, six hundred seventy-five thousand, two hundred twenty-five".