1541225315447 has 4 divisors (see below), whose sum is σ = 1549835512920. Its totient is φ = 1532615117976.

The previous prime is 1541225315381. The next prime is 1541225315479. The reversal of 1541225315447 is 7445135221451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1541225315447 - 2⁸ = 1541225315191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1541225315398 and 1541225315407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1541225315347) 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, 4305098468 + ... + 4305098825.

It is an arithmetic number, because the mean of its divisors is an integer number (387458878230).

Almost surely, 2^{1541225315447} is an apocalyptic number.

1541225315447 is a deficient number, since it is larger than the sum of its proper divisors (8610197473).

1541225315447 is an equidigital number, since it uses as much as digits as its factorization.

1541225315447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610197472.

The product of its digits is 672000, while the sum is 44.

The spelling of 1541225315447 in words is "one trillion, five hundred forty-one billion, two hundred twenty-five million, three hundred fifteen thousand, four hundred forty-seven".