1415225221 has 4 divisors (see below), whose sum is σ = 1427749452. Its totient is φ = 1402700992.

The previous prime is 1415225183. The next prime is 1415225233. The reversal of 1415225221 is 1225225141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12348196 + 1402877025 = 3514^2 + 37455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1415225221 - 2¹³ = 1415217029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415225521) 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, 6261946 + ... + 6262171.

It is an arithmetic number, because the mean of its divisors is an integer number (356937363).

Almost surely, 2^1415225221 is an apocalyptic number.

It is an amenable number.

1415225221 is a deficient number, since it is larger than the sum of its proper divisors (12524231).

1415225221 is a wasteful number, since it uses less digits than its factorization.

1415225221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12524230.

The product of its digits is 1600, while the sum is 25.

The square root of 1415225221 is about 37619.4792760346. The cubic root of 1415225221 is about 1122.7296358413.

The spelling of 1415225221 in words is "one billion, four hundred fifteen million, two hundred twenty-five thousand, two hundred twenty-one".