1225645430 has 16 divisors (see below), whose sum is σ = 2335936320. Its totient is φ = 461419392.

The previous prime is 1225645397. The next prime is 1225645441. The reversal of 1225645430 is 345465221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3604670 + ... + 3605009.

It is an arithmetic number, because the mean of its divisors is an integer number (145996020).

Almost surely, 2^1225645430 is an apocalyptic number.

1225645430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225645430 is a deficient number, since it is larger than the sum of its proper divisors (1110290890).

1225645430 is a wasteful number, since it uses less digits than its factorization.

1225645430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209703.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1225645430 is about 35009.2192143727. The cubic root of 1225645430 is about 1070.1753664880.

The spelling of 1225645430 in words is "one billion, two hundred twenty-five million, six hundred forty-five thousand, four hundred thirty".