2251525250 has 128 divisors (see below), whose sum is σ = 4743071424. Its totient is φ = 794880000.

The previous prime is 2251525249. The next prime is 2251525253. The reversal of 2251525250 is 525251522.

It can be written as a sum of positive squares in 32 ways, for example, as 2251407601 + 117649 = 47449^2 + 343^2 .

It is not an unprimeable number, because it can be changed into a prime (2251525253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8128112 + ... + 8128388.

Almost surely, 2^2251525250 is an apocalyptic number.

2251525250 is an abundant number, since it is smaller than the sum of its proper divisors (2491546174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251525250 is a wasteful number, since it uses less digits than its factorization.

2251525250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 2251525250 is about 47450.2397254218. The cubic root of 2251525250 is about 1310.6667254684. Note that the first 3 decimals are identical.

Adding to 2251525250 its reverse (525251522), we get a palindrome (2776776772).

The spelling of 2251525250 in words is "two billion, two hundred fifty-one million, five hundred twenty-five thousand, two hundred fifty".