1025045987 has 8 divisors (see below), whose sum is σ = 1176510816. Its totient is φ = 874838592.

The previous prime is 1025045971. The next prime is 1025046017. The reversal of 1025045987 is 7895405201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025045987 - 2⁴ = 1025045971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025047987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312608 + ... + 315869.

It is an arithmetic number, because the mean of its divisors is an integer number (147063852).

Almost surely, 2^1025045987 is an apocalyptic number.

1025045987 is a deficient number, since it is larger than the sum of its proper divisors (151464829).

1025045987 is an equidigital number, since it uses as much as digits as its factorization.

1025045987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628717.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 1025045987 is about 32016.3393753877. The cubic root of 1025045987 is about 1008.2799161072.

The spelling of 1025045987 in words is "one billion, twenty-five million, forty-five thousand, nine hundred eighty-seven".