1225451404 has 12 divisors (see below), whose sum is σ = 2151861264. Its totient is φ = 610633904.

The previous prime is 1225451401. The next prime is 1225451429. The reversal of 1225451404 is 4041545221.

It is a super-2 number, since 2×1225451404² = 3003462287131142432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225451401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521632 + ... + 523975.

It is an arithmetic number, because the mean of its divisors is an integer number (179321772).

Almost surely, 2^1225451404 is an apocalyptic number.

It is an amenable number.

1225451404 is a deficient number, since it is larger than the sum of its proper divisors (926409860).

1225451404 is a wasteful number, since it uses less digits than its factorization.

1225451404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045904 (or 1045902 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1225451404 is about 35006.4480346121. The cubic root of 1225451404 is about 1070.1188920791.

Adding to 1225451404 its reverse (4041545221), we get a palindrome (5266996625).

The spelling of 1225451404 in words is "one billion, two hundred twenty-five million, four hundred fifty-one thousand, four hundred four".