1225024140 has 24 divisors (see below), whose sum is σ = 3430067760. Its totient is φ = 326673088.

The previous prime is 1225024133. The next prime is 1225024147. The reversal of 1225024140 is 414205221.

It is an interprime number because it is at equal distance from previous prime (1225024133) and next prime (1225024147).

It is not an unprimeable number, because it can be changed into a prime (1225024147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10208475 + ... + 10208594.

It is an arithmetic number, because the mean of its divisors is an integer number (142919490).

Almost surely, 2^1225024140 is an apocalyptic number.

1225024140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225024140 is an abundant number, since it is smaller than the sum of its proper divisors (2205043620).

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

1225024140 is a wasteful number, since it uses less digits than its factorization.

1225024140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20417081 (or 20417079 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1225024140 is about 35000.3448554439. The cubic root of 1225024140 is about 1069.9945089537.

Adding to 1225024140 its reverse (414205221), we get a palindrome (1639229361).

The spelling of 1225024140 in words is "one billion, two hundred twenty-five million, twenty-four thousand, one hundred forty".