1225050440 has 16 divisors (see below), whose sum is σ = 2756363580. Its totient is φ = 490020160.

The previous prime is 1225050397. The next prime is 1225050473. The reversal of 1225050440 is 440505221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1176078436 + 48972004 = 34294^2 + 6998^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15313091 + ... + 15313170.

Almost surely, 2^1225050440 is an apocalyptic number.

1225050440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225050440 is an abundant number, since it is smaller than the sum of its proper divisors (1531313140).

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

1225050440 is a wasteful number, since it uses less digits than its factorization.

1225050440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30626272 (or 30626268 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1225050440 is about 35000.7205640113. The cubic root of 1225050440 is about 1070.0021661237.

Adding to 1225050440 its reverse (440505221), we get a palindrome (1665555661).

The spelling of 1225050440 in words is "one billion, two hundred twenty-five million, fifty thousand, four hundred forty".