251825725 has 6 divisors (see below), whose sum is σ = 312263930. Its totient is φ = 201460560.

The previous prime is 251825723. The next prime is 251825729. The reversal of 251825725 is 527528152.

251825725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2090916 + 249734809 = 1446^2 + 15803^2 .

It is not a de Polignac number, because 251825725 - 2¹ = 251825723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251825723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5036490 + ... + 5036539.

Almost surely, 2^251825725 is an apocalyptic number.

251825725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251825725 is a deficient number, since it is larger than the sum of its proper divisors (60438205).

251825725 is a wasteful number, since it uses less digits than its factorization.

251825725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10073039 (or 10073034 counting only the distinct ones).

The product of its digits is 56000, while the sum is 37.

The square root of 251825725 is about 15869.0177704860. The cubic root of 251825725 is about 631.4903198950.

The spelling of 251825725 in words is "two hundred fifty-one million, eight hundred twenty-five thousand, seven hundred twenty-five".