1025387 has 12 divisors (see below), whose sum is σ = 1167768. Its totient is φ = 892800.

The previous prime is 1025383. The next prime is 1025393. The reversal of 1025387 is 7835201.

It is not a de Polignac number, because 1025387 - 2² = 1025383 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10523 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (97314).

2^1025387 is an apocalyptic number.

1025387 is a deficient number, since it is larger than the sum of its proper divisors (142381).

1025387 is an equidigital number, since it uses as much as digits as its factorization.

1025387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1025387 is about 1012.6139442058. The cubic root of 1025387 is about 100.8391715461.

The spelling of 1025387 in words is "one million, twenty-five thousand, three hundred eighty-seven".