1225550242 has 16 divisors (see below), whose sum is σ = 2136553920. Its totient is φ = 516333168.

The previous prime is 1225550189. The next prime is 1225550269. The reversal of 1225550242 is 2420555221.

It is a self number, because there is not a number n which added to its sum of digits gives 1225550242.

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, 741033 + ... + 742684.

It is an arithmetic number, because the mean of its divisors is an integer number (133534620).

Almost surely, 2^1225550242 is an apocalyptic number.

1225550242 is a deficient number, since it is larger than the sum of its proper divisors (911003678).

1225550242 is a wasteful number, since it uses less digits than its factorization.

1225550242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483785.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1225550242 is about 35007.8597174977. The cubic root of 1225550242 is about 1070.1476612241.

The spelling of 1225550242 in words is "one billion, two hundred twenty-five million, five hundred fifty thousand, two hundred forty-two".