1225215704 has 32 divisors (see below), whose sum is σ = 2538177120. Its totient is φ = 551502336.

The previous prime is 1225215679. The next prime is 1225215713. The reversal of 1225215704 is 4075125221.

It is a happy number.

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, 192719 + ... + 198974.

It is an arithmetic number, because the mean of its divisors is an integer number (79318035).

Almost surely, 2^1225215704 is an apocalyptic number.

It is an amenable number.

1225215704 is an abundant number, since it is smaller than the sum of its proper divisors (1312961416).

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

1225215704 is a wasteful number, since it uses less digits than its factorization.

1225215704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391739 (or 391735 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1225215704 is about 35003.0813500755. The cubic root of 1225215704 is about 1070.0502797580.

The spelling of 1225215704 in words is "one billion, two hundred twenty-five million, two hundred fifteen thousand, seven hundred four".