1025275439 has 16 divisors (see below), whose sum is σ = 1102203072. Its totient is φ = 951211008.

The previous prime is 1025275411. The next prime is 1025275453. The reversal of 1025275439 is 9345725201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025275439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025275039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298697 + ... + 302109.

It is an arithmetic number, because the mean of its divisors is an integer number (68887692).

Almost surely, 2^1025275439 is an apocalyptic number.

1025275439 is a deficient number, since it is larger than the sum of its proper divisors (76927633).

1025275439 is a wasteful number, since it uses less digits than its factorization.

1025275439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1025275439 is about 32019.9225326983. The cubic root of 1025275439 is about 1008.3551434908.

The spelling of 1025275439 in words is "one billion, twenty-five million, two hundred seventy-five thousand, four hundred thirty-nine".