1340877925 has 12 divisors (see below), whose sum is σ = 1663276356. Its totient is φ = 1072323200.

The previous prime is 1340877841. The next prime is 1340877947. The reversal of 1340877925 is 5297780431.

It is a Cunningham number, because it is equal to 36618²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 1340877924 = 1^2 + 36618^2 .

It is not a de Polignac number, because 1340877925 - 2¹⁵ = 1340845157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78777 + ... + 94273.

It is an arithmetic number, because the mean of its divisors is an integer number (138606363).

Almost surely, 2^1340877925 is an apocalyptic number.

It is an amenable number.

1340877925 is a deficient number, since it is larger than the sum of its proper divisors (322398431).

1340877925 is a wasteful number, since it uses less digits than its factorization.

1340877925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18968 (or 18963 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 1340877925 is about 36618.0000136545. Note that the first 4 decimals coincide. The cubic root of 1340877925 is about 1102.7144873667.

The spelling of 1340877925 in words is "one billion, three hundred forty million, eight hundred seventy-seven thousand, nine hundred twenty-five".