1251200151 has 12 divisors (see below), whose sum is σ = 1809293512. Its totient is φ = 833208336.

The previous prime is 1251200147. The next prime is 1251200173. The reversal of 1251200151 is 1510021521.

1251200151 is a `hidden beast` number, since 1 + 2 + 512 + 0 + 0 + 151 = 666.

1251200151 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1251200151 - 2² = 1251200147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251200351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68476 + ... + 84801.

Almost surely, 2^1251200151 is an apocalyptic number.

1251200151 is a deficient number, since it is larger than the sum of its proper divisors (558093361).

1251200151 is a wasteful number, since it uses less digits than its factorization.

1251200151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154190 (or 154187 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1251200151 is about 35372.3076855328. The cubic root of 1251200151 is about 1077.5619876663.

Adding to 1251200151 its reverse (1510021521), we get a palindrome (2761221672).

The spelling of 1251200151 in words is "one billion, two hundred fifty-one million, two hundred thousand, one hundred fifty-one".