1225202340 has 48 divisors (see below), whose sum is σ = 3432340800. Its totient is φ = 326551680.

The previous prime is 1225202317. The next prime is 1225202357. The reversal of 1225202340 is 432025221.

It is a super-2 number, since 2×1225202340² = 3002241547882951200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148935 + ... + 156945.

It is an arithmetic number, because the mean of its divisors is an integer number (71507100).

Almost surely, 2^1225202340 is an apocalyptic number.

1225202340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225202340 is an abundant number, since it is smaller than the sum of its proper divisors (2207138460).

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

1225202340 is a wasteful number, since it uses less digits than its factorization.

1225202340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10572 (or 10570 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1225202340 is about 35002.8904520755. The cubic root of 1225202340 is about 1070.0463892311.

Adding to 1225202340 its reverse (432025221), we get a palindrome (1657227561).

The spelling of 1225202340 in words is "one billion, two hundred twenty-five million, two hundred two thousand, three hundred forty".