1223156525352 has 16 divisors (see below), whose sum is σ = 3057891313440. Its totient is φ = 407718841776.

The previous prime is 1223156525341. The next prime is 1223156525363. The reversal of 1223156525352 is 2535256513221.

It is an interprime number because it is at equal distance from previous prime (1223156525341) and next prime (1223156525363).

It is a super-2 number, since 2×1223156525352² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25482427588 + ... + 25482427635.

It is an arithmetic number, because the mean of its divisors is an integer number (191118207090).

Almost surely, 2^{1223156525352} is an apocalyptic number.

1223156525352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223156525352 is an abundant number, since it is smaller than the sum of its proper divisors (1834734788088).

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

1223156525352 is a wasteful number, since it uses less digits than its factorization.

1223156525352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50964855232 (or 50964855228 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

The spelling of 1223156525352 in words is "one trillion, two hundred twenty-three billion, one hundred fifty-six million, five hundred twenty-five thousand, three hundred fifty-two".