1223956525000 has 96 divisors (see below), whose sum is σ = 3129234716160. Its totient is φ = 445075000000.

The previous prime is 1223956524991. The next prime is 1223956525003. The reversal of 1223956525000 is 5256593221.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1223956525003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1950376 + ... + 2500375.

It is an arithmetic number, because the mean of its divisors is an integer number (32596194960).

Almost surely, 2^{1223956525000} is an apocalyptic number.

1223956525000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223956525000 is an abundant number, since it is smaller than the sum of its proper divisors (1905278191160).

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

1223956525000 is an equidigital number, since it uses as much as digits as its factorization.

1223956525000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450793 (or 4450769 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 1223956525000 in words is "one trillion, two hundred twenty-three billion, nine hundred fifty-six million, five hundred twenty-five thousand".