925278491 has 2 divisors, whose sum is σ = 925278492. Its totient is φ = 925278490.

The previous prime is 925278479. The next prime is 925278517. The reversal of 925278491 is 194872529.

925278491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (194872529) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-925278491 is a prime.

It is a super-2 number, since 2×925278491² = 1712280571814474162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (925278451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462639245 + 462639246.

It is an arithmetic number, because the mean of its divisors is an integer number (462639246).

Almost surely, 2^925278491 is an apocalyptic number.

925278491 is a deficient number, since it is larger than the sum of its proper divisors (1).

925278491 is an equidigital number, since it uses as much as digits as its factorization.

925278491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 925278491 is about 30418.3906707768. The cubic root of 925278491 is about 974.4453530900.

The spelling of 925278491 in words is "nine hundred twenty-five million, two hundred seventy-eight thousand, four hundred ninety-one".