1225733140 has 24 divisors (see below), whose sum is σ = 2662800840. Its totient is φ = 473386368.

The previous prime is 1225733129. The next prime is 1225733143. The reversal of 1225733140 is 413375221.

It can be written as a sum of positive squares in 4 ways, for example, as 59783824 + 1165949316 = 7732^2 + 34146^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1225733099 and 1225733108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225733143) 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, 1056087 + ... + 1057246.

It is an arithmetic number, because the mean of its divisors is an integer number (110950035).

Almost surely, 2^1225733140 is an apocalyptic number.

1225733140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225733140 is an abundant number, since it is smaller than the sum of its proper divisors (1437067700).

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

1225733140 is a wasteful number, since it uses less digits than its factorization.

1225733140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113371 (or 2113369 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1225733140 is about 35010.4718620015. The cubic root of 1225733140 is about 1070.2008939475.

The spelling of 1225733140 in words is "one billion, two hundred twenty-five million, seven hundred thirty-three thousand, one hundred forty".