1251055325 has 12 divisors (see below), whose sum is σ = 1670640468. Its totient is φ = 923856000.

The previous prime is 1251055319. The next prime is 1251055343. The reversal of 1251055325 is 5235501521.

It can be written as a sum of positive squares in 6 ways, for example, as 303770041 + 947285284 = 17429^2 + 30778^2 .

It is not a de Polignac number, because 1251055325 - 2¹² = 1251051229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1924376 + ... + 1925025.

It is an arithmetic number, because the mean of its divisors is an integer number (139220039).

Almost surely, 2^1251055325 is an apocalyptic number.

It is an amenable number.

1251055325 is a deficient number, since it is larger than the sum of its proper divisors (419585143).

1251055325 is a wasteful number, since it uses less digits than its factorization.

1251055325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849424 (or 3849419 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1251055325 is about 35370.2604598835. The cubic root of 1251055325 is about 1077.5204102486.

Adding to 1251055325 its reverse (5235501521), we get a palindrome (6486556846).

The spelling of 1251055325 in words is "one billion, two hundred fifty-one million, fifty-five thousand, three hundred twenty-five".