15212303252 has 6 divisors (see below), whose sum is σ = 26621530698. Its totient is φ = 7606151624.

The previous prime is 15212303243. The next prime is 15212303261. The reversal of 15212303252 is 25230321251.

It is a happy number.

15212303252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15212303243) and next prime (15212303261).

It can be written as a sum of positive squares in only one way, i.e., 13950916996 + 1261386256 = 118114^2 + 35516^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901537903 + ... + 1901537910.

It is an arithmetic number, because the mean of its divisors is an integer number (4436921783).

Almost surely, 2^15212303252 is an apocalyptic number.

It is an amenable number.

15212303252 is a deficient number, since it is larger than the sum of its proper divisors (11409227446).

15212303252 is a wasteful number, since it uses less digits than its factorization.

15212303252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803075817 (or 3803075815 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 15212303252 in words is "fifteen billion, two hundred twelve million, three hundred three thousand, two hundred fifty-two".