15145664425 has 12 divisors (see below), whose sum is σ = 18789088716. Its totient is φ = 12111070400.

The previous prime is 15145664423. The next prime is 15145664437. The reversal of 15145664425 is 52446654151.

It can be written as a sum of positive squares in 6 ways, for example, as 848440384 + 14297224041 = 29128^2 + 119571^2 .

It is not a de Polignac number, because 15145664425 - 2¹ = 15145664423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15145664423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79486 + ... + 191335.

It is an arithmetic number, because the mean of its divisors is an integer number (1565757393).

Almost surely, 2^15145664425 is an apocalyptic number.

It is an amenable number.

15145664425 is a deficient number, since it is larger than the sum of its proper divisors (3643424291).

15145664425 is a wasteful number, since it uses less digits than its factorization.

15145664425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273068 (or 273063 counting only the distinct ones).

The product of its digits is 576000, while the sum is 43.

The spelling of 15145664425 in words is "fifteen billion, one hundred forty-five million, six hundred sixty-four thousand, four hundred twenty-five".