15642425332 has 12 divisors (see below), whose sum is σ = 27681820740. Its totient is φ = 7733333696.

The previous prime is 15642425303. The next prime is 15642425341. The reversal of 15642425332 is 23352424651.

It can be written as a sum of positive squares in 2 ways, for example, as 9577753956 + 6064671376 = 97866^2 + 77876^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15642425291 and 15642425300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21969343 + ... + 21970054.

It is an arithmetic number, because the mean of its divisors is an integer number (2306818395).

Almost surely, 2^15642425332 is an apocalyptic number.

It is an amenable number.

15642425332 is a deficient number, since it is larger than the sum of its proper divisors (12039395408).

15642425332 is a wasteful number, since it uses less digits than its factorization.

15642425332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43939490 (or 43939488 counting only the distinct ones).

The product of its digits is 172800, while the sum is 37.

Adding to 15642425332 its reverse (23352424651), we get a palindrome (38994849983).

The spelling of 15642425332 in words is "fifteen billion, six hundred forty-two million, four hundred twenty-five thousand, three hundred thirty-two".