1225404661630 has 32 divisors (see below), whose sum is σ = 2230413120000. Its totient is φ = 484706594592.

The previous prime is 1225404661609. The next prime is 1225404661631. The reversal of 1225404661630 is 361664045221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225404661631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564530 + ... + 2213269.

It is an arithmetic number, because the mean of its divisors is an integer number (69700410000).

Almost surely, 2^{1225404661630} is an apocalyptic number.

1225404661630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225404661630 is a deficient number, since it is larger than the sum of its proper divisors (1005008458370).

1225404661630 is a wasteful number, since it uses less digits than its factorization.

1225404661630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778168.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 1225404661630 in words is "one trillion, two hundred twenty-five billion, four hundred four million, six hundred sixty-one thousand, six hundred thirty".