1025199 has 12 divisors (see below), whose sum is σ = 1692496. Its totient is φ = 585792.

The previous prime is 1025197. The next prime is 1025203. The reversal of 1025199 is 9915201.

It is a happy number.

1025199 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 1025199 - 2¹ = 1025197 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 (1025197) 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, 8074 + ... + 8199.

2^1025199 is an apocalyptic number.

1025199 is a deficient number, since it is larger than the sum of its proper divisors (667297).

1025199 is a wasteful number, since it uses less digits than its factorization.

1025199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16286 (or 16283 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1025199 is about 1012.5211108910. The cubic root of 1025199 is about 100.8330083697.

The spelling of 1025199 in words is "one million, twenty-five thousand, one hundred ninety-nine".