447274525251 has 4 divisors (see below), whose sum is σ = 596366033672. Its totient is φ = 298183016832.

The previous prime is 447274525223. The next prime is 447274525273. The reversal of 447274525251 is 152525472744.

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

It is not a de Polignac number, because 447274525251 - 2¹⁹ = 447274000963 is a prime.

It is a super-2 number, since 2×447274525251² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447274525251.

It is not an unprimeable number, because it can be changed into a prime (447274565251) 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, 74545754206 + ... + 74545754211.

It is an arithmetic number, because the mean of its divisors is an integer number (149091508418).

Almost surely, 2^447274525251 is an apocalyptic number.

447274525251 is a deficient number, since it is larger than the sum of its proper divisors (149091508421).

447274525251 is a wasteful number, since it uses less digits than its factorization.

447274525251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149091508420.

The product of its digits is 3136000, while the sum is 48.

Adding to 447274525251 its reverse (152525472744), we get a palindrome (599799997995).

The spelling of 447274525251 in words is "four hundred forty-seven billion, two hundred seventy-four million, five hundred twenty-five thousand, two hundred fifty-one".