2725621137447 has 8 divisors (see below), whose sum is σ = 3913712402544. Its totient is φ = 1677305315328.

The previous prime is 2725621137419. The next prime is 2725621137461. The reversal of 2725621137447 is 7447311265272.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2725621137447 - 2⁸ = 2725621137191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2725621137447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725621137467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34943860698 + ... + 34943860775.

It is an arithmetic number, because the mean of its divisors is an integer number (489214050318).

Almost surely, 2^{2725621137447} is an apocalyptic number.

2725621137447 is a deficient number, since it is larger than the sum of its proper divisors (1188091265097).

2725621137447 is a wasteful number, since it uses less digits than its factorization.

2725621137447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69887721489.

The product of its digits is 3951360, while the sum is 51.

The spelling of 2725621137447 in words is "two trillion, seven hundred twenty-five billion, six hundred twenty-one million, one hundred thirty-seven thousand, four hundred forty-seven".