15225211012 has 24 divisors (see below), whose sum is σ = 29258816832. Its totient is φ = 6874716000.

The previous prime is 15225210983. The next prime is 15225211013. The reversal of 15225211012 is 21011252251.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (15225211013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139143 + ... + 1152430.

It is an arithmetic number, because the mean of its divisors is an integer number (1219117368).

Almost surely, 2^15225211012 is an apocalyptic number.

It is an amenable number.

15225211012 is a deficient number, since it is larger than the sum of its proper divisors (14033605820).

15225211012 is a wasteful number, since it uses less digits than its factorization.

15225211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291739 (or 2291737 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 15225211012 its reverse (21011252251), we get a palindrome (36236463263).

The spelling of 15225211012 in words is "fifteen billion, two hundred twenty-five million, two hundred eleven thousand, twelve".