251125315445 has 16 divisors (see below), whose sum is σ = 308380207872. Its totient is φ = 196214356800.

The previous prime is 251125315411. The next prime is 251125315451. The reversal of 251125315445 is 544513521152.

It is a de Polignac number, because none of the positive numbers 2^k-251125315445 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 251125315399 and 251125315408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3902804 + ... + 3966626.

It is an arithmetic number, because the mean of its divisors is an integer number (19273762992).

Almost surely, 2^251125315445 is an apocalyptic number.

It is an amenable number.

251125315445 is a deficient number, since it is larger than the sum of its proper divisors (57254892427).

251125315445 is a wasteful number, since it uses less digits than its factorization.

251125315445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82172.

The product of its digits is 120000, while the sum is 38.

Adding to 251125315445 its reverse (544513521152), we get a palindrome (795638836597).

The spelling of 251125315445 in words is "two hundred fifty-one billion, one hundred twenty-five million, three hundred fifteen thousand, four hundred forty-five".