1025028387 has 6 divisors (see below), whose sum is σ = 1480596572. Its totient is φ = 683352252.

The previous prime is 1025028313. The next prime is 1025028401. The reversal of 1025028387 is 7838205201.

1025028387 is a `hidden beast` number, since 1 + 0 + 250 + 28 + 387 = 666.

It is not a de Polignac number, because 1025028387 - 2¹² = 1025024291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025028307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56946013 + ... + 56946030.

Almost surely, 2^1025028387 is an apocalyptic number.

1025028387 is a deficient number, since it is larger than the sum of its proper divisors (455568185).

1025028387 is a wasteful number, since it uses less digits than its factorization.

1025028387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113892049 (or 113892046 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1025028387 is about 32016.0645145527. The cubic root of 1025028387 is about 1008.2741453651.

It can be divided in two parts, 102502 and 8387, that added together give a square (110889 = 333²).

The spelling of 1025028387 in words is "one billion, twenty-five million, twenty-eight thousand, three hundred eighty-seven".