23145505225530 has 32 divisors (see below), whose sum is σ = 56731110683904. Its totient is φ = 6040812710976.

The previous prime is 23145505225517. The next prime is 23145505225547. The reversal of 23145505225530 is 3552250554132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8207624557 + ... + 8207627376.

It is an arithmetic number, because the mean of its divisors is an integer number (1772847208872).

Almost surely, 2^{23145505225530} is an apocalyptic number.

23145505225530 is an abundant number, since it is smaller than the sum of its proper divisors (33585605458374).

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

23145505225530 is a wasteful number, since it uses less digits than its factorization.

23145505225530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16415251990.

The product of its (nonzero) digits is 900000, while the sum is 42.

Adding to 23145505225530 its reverse (3552250554132), we get a palindrome (26697755779662).

The spelling of 23145505225530 in words is "twenty-three trillion, one hundred forty-five billion, five hundred five million, two hundred twenty-five thousand, five hundred thirty".