1225407318 has 32 divisors (see below), whose sum is σ = 2616157440. Its totient is φ = 381517920.

The previous prime is 1225407307. The next prime is 1225407319. The reversal of 1225407318 is 8137045221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225407319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67605 + ... + 83792.

It is an arithmetic number, because the mean of its divisors is an integer number (81754920).

Almost surely, 2^1225407318 is an apocalyptic number.

1225407318 is an abundant number, since it is smaller than the sum of its proper divisors (1390750122).

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

1225407318 is a wasteful number, since it uses less digits than its factorization.

1225407318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151492.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1225407318 is about 35005.8183449552. The cubic root of 1225407318 is about 1070.1060593038.

The spelling of 1225407318 in words is "one billion, two hundred twenty-five million, four hundred seven thousand, three hundred eighteen".