925781881 has 2 divisors, whose sum is σ = 925781882. Its totient is φ = 925781880.

The previous prime is 925781863. The next prime is 925781891. The reversal of 925781881 is 188187529.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907214400 + 18567481 = 30120^2 + 4309^2 .

It is a cyclic number.

It is not a de Polignac number, because 925781881 - 2¹⁵ = 925749113 is a prime.

It is a super-2 number, since 2×925781881² = 1714144182375796322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (925781891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462890940 + 462890941.

It is an arithmetic number, because the mean of its divisors is an integer number (462890941).

Almost surely, 2^925781881 is an apocalyptic number.

It is an amenable number.

925781881 is a deficient number, since it is larger than the sum of its proper divisors (1).

925781881 is an equidigital number, since it uses as much as digits as its factorization.

925781881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 49.

The square root of 925781881 is about 30426.6639807916. The cubic root of 925781881 is about 974.6220339929.

The spelling of 925781881 in words is "nine hundred twenty-five million, seven hundred eighty-one thousand, eight hundred eighty-one".