1225712150 has 24 divisors (see below), whose sum is σ = 2455197024. Its totient is φ = 452570400.

The previous prime is 1225712143. The next prime is 1225712153. The reversal of 1225712150 is 512175221.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225712153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 942206 + ... + 943505.

It is an arithmetic number, because the mean of its divisors is an integer number (102299876).

Almost surely, 2^1225712150 is an apocalyptic number.

1225712150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225712150 is an abundant number, since it is smaller than the sum of its proper divisors (1229484874).

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

1225712150 is a wasteful number, since it uses less digits than its factorization.

1225712150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885736 (or 1885731 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 1225712150 is about 35010.1720932646. The cubic root of 1225712150 is about 1070.1947850471.

Adding to 1225712150 its reverse (512175221), we get a palindrome (1737887371).

The spelling of 1225712150 in words is "one billion, two hundred twenty-five million, seven hundred twelve thousand, one hundred fifty".