15213312250 has 32 divisors (see below), whose sum is σ = 28962048960. Its totient is φ = 5982178000.

The previous prime is 15213312239. The next prime is 15213312251. The reversal of 15213312250 is 5221331251.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (15213312251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500956 + ... + 530455.

It is an arithmetic number, because the mean of its divisors is an integer number (905064030).

Almost surely, 2^15213312250 is an apocalyptic number.

15213312250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15213312250 is a deficient number, since it is larger than the sum of its proper divisors (13748736710).

15213312250 is a wasteful number, since it uses less digits than its factorization.

15213312250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031487 (or 1031477 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 15213312250 in words is "fifteen billion, two hundred thirteen million, three hundred twelve thousand, two hundred fifty".