1225451432 has 8 divisors (see below), whose sum is σ = 2297721450. Its totient is φ = 612725712.

The previous prime is 1225451429. The next prime is 1225451449. The reversal of 1225451432 is 2341545221.

It can be written as a sum of positive squares in only one way, i.e., 632723716 + 592727716 = 25154^2 + 24346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1225451395 and 1225451404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76590707 + ... + 76590722.

Almost surely, 2^1225451432 is an apocalyptic number.

It is an amenable number.

1225451432 is a deficient number, since it is larger than the sum of its proper divisors (1072270018).

1225451432 is a wasteful number, since it uses less digits than its factorization.

1225451432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153181435 (or 153181431 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 1225451432 is about 35006.4484345385. The cubic root of 1225451432 is about 1070.1189002293.

Adding to 1225451432 its reverse (2341545221), we get a palindrome (3566996653).

The spelling of 1225451432 in words is "one billion, two hundred twenty-five million, four hundred fifty-one thousand, four hundred thirty-two".