1225177404 has 24 divisors (see below), whose sum is σ = 3118633728. Its totient is φ = 371265840.

The previous prime is 1225177379. The next prime is 1225177417. The reversal of 1225177404 is 4047715221.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4640692 + ... + 4640955.

It is an arithmetic number, because the mean of its divisors is an integer number (129943072).

Almost surely, 2^1225177404 is an apocalyptic number.

It is an amenable number.

1225177404 is an abundant number, since it is smaller than the sum of its proper divisors (1893456324).

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

1225177404 is a wasteful number, since it uses less digits than its factorization.

1225177404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281665 (or 9281663 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 1225177404 is about 35002.5342511082. The cubic root of 1225177404 is about 1070.0391297886.

It can be divided in two parts, 122517 and 7404, that added together give a palindrome (129921).

The spelling of 1225177404 in words is "one billion, two hundred twenty-five million, one hundred seventy-seven thousand, four hundred four".