1251025 has 12 divisors (see below), whose sum is σ = 1565872. Its totient is φ = 991440.

The previous prime is 1251011. The next prime is 1251037. The reversal of 1251025 is 5201521.

It is not a de Polignac number, because 1251025 - 2¹¹ = 1248977 is a prime.

It is a Duffinian number.

1251025 is a lucky 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, 3922 + ... + 4228.

2^1251025 is an apocalyptic number.

It is an amenable number.

1251025 is a deficient number, since it is larger than the sum of its proper divisors (314847).

1251025 is a wasteful number, since it uses less digits than its factorization.

1251025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1251025 is about 1118.4922887530. The cubic root of 1251025 is about 107.7511703980.

Adding to 1251025 its reverse (5201521), we get a palindrome (6452546).

The spelling of 1251025 in words is "one million, two hundred fifty-one thousand, twenty-five".