1501225522 has 8 divisors (see below), whose sum is σ = 2266181676. Its totient is φ = 745831632.

The previous prime is 1501225507. The next prime is 1501225529. The reversal of 1501225522 is 2255221051.

It can be written as a sum of positive squares in 2 ways, for example, as 1441796841 + 59428681 = 37971^2 + 7709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1501225529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390173 + ... + 2390800.

Almost surely, 2^1501225522 is an apocalyptic number.

1501225522 is a deficient number, since it is larger than the sum of its proper divisors (764956154).

1501225522 is a wasteful number, since it uses less digits than its factorization.

1501225522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781132.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1501225522 is about 38745.6516527984. The cubic root of 1501225522 is about 1145.0259071323.

Adding to 1501225522 its reverse (2255221051), we get a palindrome (3756446573).

The spelling of 1501225522 in words is "one billion, five hundred one million, two hundred twenty-five thousand, five hundred twenty-two".