1251264015150 has 48 divisors (see below), whose sum is σ = 3103439835888. Its totient is φ = 333637600000.

The previous prime is 1251264015091. The next prime is 1251264015151. The reversal of 1251264015150 is 515104621521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251264015151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1140250 + ... + 1950050.

It is an arithmetic number, because the mean of its divisors is an integer number (64654996581).

Almost surely, 2^{1251264015150} is an apocalyptic number.

1251264015150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251264015150 is an abundant number, since it is smaller than the sum of its proper divisors (1852175820738).

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

1251264015150 is a wasteful number, since it uses less digits than its factorization.

1251264015150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820117 (or 820112 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 1251264015150 its reverse (515104621521), we get a palindrome (1766368636671).

The spelling of 1251264015150 in words is "one trillion, two hundred fifty-one billion, two hundred sixty-four million, fifteen thousand, one hundred fifty".