1025199669 has 16 divisors (see below), whose sum is σ = 1490720000. Its totient is φ = 622904256.

The previous prime is 1025199613. The next prime is 1025199689. The reversal of 1025199669 is 9669915201.

It is not a de Polignac number, because 1025199669 - 2²⁴ = 1008422453 is a prime.

It is a super-2 number, since 2×1025199669² = 2102068722635419122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025199689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163294 + ... + 169455.

It is an arithmetic number, because the mean of its divisors is an integer number (93170000).

Almost surely, 2^1025199669 is an apocalyptic number.

It is an amenable number.

1025199669 is a deficient number, since it is larger than the sum of its proper divisors (465520331).

1025199669 is a wasteful number, since it uses less digits than its factorization.

1025199669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332844.

The product of its (nonzero) digits is 262440, while the sum is 48.

The square root of 1025199669 is about 32018.7393412046. The cubic root of 1025199669 is about 1008.3303030273.

The spelling of 1025199669 in words is "one billion, twenty-five million, one hundred ninety-nine thousand, six hundred sixty-nine".