2251966825 has 6 divisors (see below), whose sum is σ = 2792438894. Its totient is φ = 1801573440.

The previous prime is 2251966807. The next prime is 2251966831. The reversal of 2251966825 is 5286691522.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 228856384 + 2023110441 = 15128^2 + 44979^2 .

It is not a de Polignac number, because 2251966825 - 2²¹ = 2249869673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45039312 + ... + 45039361.

Almost surely, 2^2251966825 is an apocalyptic number.

2251966825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2251966825 is a deficient number, since it is larger than the sum of its proper divisors (540472069).

2251966825 is an equidigital number, since it uses as much as digits as its factorization.

2251966825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90078683 (or 90078678 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The square root of 2251966825 is about 47454.8925296433. The cubic root of 2251966825 is about 1310.7524036588.

The spelling of 2251966825 in words is "two billion, two hundred fifty-one million, nine hundred sixty-six thousand, eight hundred twenty-five".