15222045425 has 6 divisors (see below), whose sum is σ = 18875336358. Its totient is φ = 12177636320.

The previous prime is 15222045367. The next prime is 15222045427. The reversal of 15222045425 is 52454022251.

It can be written as a sum of positive squares in 3 ways, for example, as 8549776 + 15213495649 = 2924^2 + 123343^2 .

It is not a de Polignac number, because 15222045425 - 2⁸ = 15222045169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15222045391 and 15222045400.

It is not an unprimeable number, because it can be changed into a prime (15222045427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 304440884 + ... + 304440933.

It is an arithmetic number, because the mean of its divisors is an integer number (3145889393).

Almost surely, 2^15222045425 is an apocalyptic number.

It is an amenable number.

15222045425 is a deficient number, since it is larger than the sum of its proper divisors (3653290933).

15222045425 is an equidigital number, since it uses as much as digits as its factorization.

15222045425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608881827 (or 608881822 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 15222045425 its reverse (52454022251), we get a palindrome (67676067676).

The spelling of 15222045425 in words is "fifteen billion, two hundred twenty-two million, forty-five thousand, four hundred twenty-five".