15725653343249 has 4 divisors (see below), whose sum is σ = 15783681584640. Its totient is φ = 15667625101860.

The previous prime is 15725653343233. The next prime is 15725653343261. The reversal of 15725653343249 is 94234335652751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15725653343249 - 2⁴ = 15725653343233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15725653345249) 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, 29014120289 + ... + 29014120830.

It is an arithmetic number, because the mean of its divisors is an integer number (3945920396160).

Almost surely, 2^{15725653343249} is an apocalyptic number.

It is an amenable number.

15725653343249 is a deficient number, since it is larger than the sum of its proper divisors (58028241391).

15725653343249 is an equidigital number, since it uses as much as digits as its factorization.

15725653343249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58028241390.

The product of its digits is 81648000, while the sum is 59.

The spelling of 15725653343249 in words is "fifteen trillion, seven hundred twenty-five billion, six hundred fifty-three million, three hundred forty-three thousand, two hundred forty-nine".