1225854252 has 144 divisors (see below), whose sum is σ = 3688939072. Its totient is φ = 335923200.

The previous prime is 1225854247. The next prime is 1225854283. The reversal of 1225854252 is 2524585221.

1225854252 is a `hidden beast` number, since 1 + 22 + 585 + 4 + 2 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 679752 + ... + 681552.

Almost surely, 2^1225854252 is an apocalyptic number.

1225854252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225854252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844469536).

1225854252 is an abundant number, since it is smaller than the sum of its proper divisors (2463084820).

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

1225854252 is a wasteful number, since it uses less digits than its factorization.

1225854252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1923 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 1225854252 is about 35012.2014732007. The cubic root of 1225854252 is about 1070.2361408534.

The spelling of 1225854252 in words is "one billion, two hundred twenty-five million, eight hundred fifty-four thousand, two hundred fifty-two".