1225262140 has 24 divisors (see below), whose sum is σ = 2573751600. Its totient is φ = 489971328.

The previous prime is 1225262111. The next prime is 1225262183. The reversal of 1225262140 is 412625221.

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, 103359 + ... + 114601.

It is an arithmetic number, because the mean of its divisors is an integer number (107239650).

Almost surely, 2^1225262140 is an apocalyptic number.

1225262140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225262140 is an abundant number, since it is smaller than the sum of its proper divisors (1348489460).

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

1225262140 is a wasteful number, since it uses less digits than its factorization.

1225262140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16701 (or 16699 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1225262140 is about 35003.7446568221. The cubic root of 1225262140 is about 1070.0637979837.

Adding to 1225262140 its reverse (412625221), we get a palindrome (1637887361).

The spelling of 1225262140 in words is "one billion, two hundred twenty-five million, two hundred sixty-two thousand, one hundred forty".