1225929812040 has 96 divisors (see below), whose sum is σ = 4014686332800. Its totient is φ = 324419072640.

The previous prime is 1225929812033. The next prime is 1225929812057. The reversal of 1225929812040 is 402189295221.

1225929812040 is a `hidden beast` number, since 1 + 2 + 2 + 592 + 9 + 8 + 12 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12950400 + ... + 13044719.

It is an arithmetic number, because the mean of its divisors is an integer number (41819649300).

Almost surely, 2^{1225929812040} is an apocalyptic number.

1225929812040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225929812040 is an abundant number, since it is smaller than the sum of its proper divisors (2788756520760).

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

1225929812040 is a wasteful number, since it uses less digits than its factorization.

1225929812040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25995267 (or 25995260 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 1225929812040 in words is "one trillion, two hundred twenty-five billion, nine hundred twenty-nine million, eight hundred twelve thousand, forty".