1225451412 has 18 divisors (see below), whose sum is σ = 3097668938. Its totient is φ = 408483792.

The previous prime is 1225451401. The next prime is 1225451429. The reversal of 1225451412 is 2141545221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1225280016 + 171396 = 35004^2 + 414^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17020123 + ... + 17020194.

Almost surely, 2^1225451412 is an apocalyptic number.

1225451412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225451412 is an abundant number, since it is smaller than the sum of its proper divisors (1872217526).

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

1225451412 is a wasteful number, since it uses less digits than its factorization.

1225451412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040327 (or 34040322 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1225451412 is about 35006.4481488768. The cubic root of 1225451412 is about 1070.1188944077.

Adding to 1225451412 its reverse (2141545221), we get a palindrome (3366996633).

The spelling of 1225451412 in words is "one billion, two hundred twenty-five million, four hundred fifty-one thousand, four hundred twelve".