251426725 has 12 divisors (see below), whose sum is σ = 340112160. Its totient is φ = 182855600.

The previous prime is 251426713. The next prime is 251426741. The reversal of 251426725 is 527624152.

It is not a de Polignac number, because 251426725 - 2¹³ = 251418533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 456865 + ... + 457414.

It is an arithmetic number, because the mean of its divisors is an integer number (28342680).

Almost surely, 2^251426725 is an apocalyptic number.

251426725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251426725 is a deficient number, since it is larger than the sum of its proper divisors (88685435).

251426725 is a wasteful number, since it uses less digits than its factorization.

251426725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914300 (or 914295 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 251426725 is about 15856.4411202514. The cubic root of 251426725 is about 631.1566263877.

The spelling of 251426725 in words is "two hundred fifty-one million, four hundred twenty-six thousand, seven hundred twenty-five".