2251202725 has 12 divisors (see below), whose sum is σ = 2805667524. Its totient is φ = 1791816320.

The previous prime is 2251202641. The next prime is 2251202731. The reversal of 2251202725 is 5272021522.

It can be written as a sum of positive squares in 6 ways, for example, as 626951521 + 1624251204 = 25039^2 + 40302^2 .

It is not a de Polignac number, because 2251202725 - 2²³ = 2242814117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2251202693 and 2251202702.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 223624 + ... + 233473.

It is an arithmetic number, because the mean of its divisors is an integer number (233805627).

Almost surely, 2^2251202725 is an apocalyptic number.

2251202725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2251202725 is a deficient number, since it is larger than the sum of its proper divisors (554464799).

2251202725 is a wasteful number, since it uses less digits than its factorization.

2251202725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457304 (or 457299 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 2251202725 is about 47446.8410434246. The cubic root of 2251202725 is about 1310.6041393064.

The spelling of 2251202725 in words is "two billion, two hundred fifty-one million, two hundred two thousand, seven hundred twenty-five".