251415632273 has 8 divisors (see below), whose sum is σ = 270858793128. Its totient is φ = 231987256704.

The previous prime is 251415632233. The next prime is 251415632287. The reversal of 251415632273 is 372236514152.

It can be written as a sum of positive squares in 4 ways, for example, as 32721915664 + 218693716609 = 180892^2 + 467647^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 251415632273 - 2¹⁴ = 251415615889 is a prime.

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 251415632273.

It is not an unprimeable number, because it can be changed into a prime (251415632233) 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, 3660986 + ... + 3729027.

It is an arithmetic number, because the mean of its divisors is an integer number (33857349141).

Almost surely, 2^251415632273 is an apocalyptic number.

It is an amenable number.

251415632273 is a deficient number, since it is larger than the sum of its proper divisors (19443160855).

251415632273 is a wasteful number, since it uses less digits than its factorization.

251415632273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392643.

The product of its digits is 302400, while the sum is 41.

The spelling of 251415632273 in words is "two hundred fifty-one billion, four hundred fifteen million, six hundred thirty-two thousand, two hundred seventy-three".