909925054931 has 2 divisors, whose sum is σ = 909925054932. Its totient is φ = 909925054930.

The previous prime is 909925054921. The next prime is 909925054949. The reversal of 909925054931 is 139450529909.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (139450529909) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-909925054931 is a prime.

It is a super-2 number, since 2×909925054931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (909925054901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454962527465 + 454962527466.

It is an arithmetic number, because the mean of its divisors is an integer number (454962527466).

Almost surely, 2^909925054931 is an apocalyptic number.

909925054931 is a deficient number, since it is larger than the sum of its proper divisors (1).

909925054931 is an equidigital number, since it uses as much as digits as its factorization.

909925054931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3936600, while the sum is 56.

The spelling of 909925054931 in words is "nine hundred nine billion, nine hundred twenty-five million, fifty-four thousand, nine hundred thirty-one".