15725067542 has 4 divisors (see below), whose sum is σ = 23587601316. Its totient is φ = 7862533770.

The previous prime is 15725067539. The next prime is 15725067559. The reversal of 15725067542 is 24576052751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24576052751 = 1297 ⋅18948383.

It is a junction number, because it is equal to n+sod(n) for n = 15725067493 and 15725067502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3931266884 + ... + 3931266887.

It is an arithmetic number, because the mean of its divisors is an integer number (5896900329).

Almost surely, 2^15725067542 is an apocalyptic number.

15725067542 is a deficient number, since it is larger than the sum of its proper divisors (7862533774).

15725067542 is an equidigital number, since it uses as much as digits as its factorization.

15725067542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862533773.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 15725067542 in words is "fifteen billion, seven hundred twenty-five million, sixty-seven thousand, five hundred forty-two".