1251415150 has 12 divisors (see below), whose sum is σ = 2327632272. Its totient is φ = 500566040.

The previous prime is 1251415141. The next prime is 1251415159. The reversal of 1251415150 is 515141521.

It is an interprime number because it is at equal distance from previous prime (1251415141) and next prime (1251415159).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251415159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12514102 + ... + 12514201.

It is an arithmetic number, because the mean of its divisors is an integer number (193969356).

Almost surely, 2^1251415150 is an apocalyptic number.

1251415150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251415150 is a deficient number, since it is larger than the sum of its proper divisors (1076217122).

1251415150 is a wasteful number, since it uses less digits than its factorization.

1251415150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25028315 (or 25028310 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1251415150 is about 35375.3466414112. The cubic root of 1251415150 is about 1077.6237048054.

Adding to 1251415150 its reverse (515141521), we get a palindrome (1766556671).

The spelling of 1251415150 in words is "one billion, two hundred fifty-one million, four hundred fifteen thousand, one hundred fifty".