1025666477 has 8 divisors (see below), whose sum is σ = 1142716032. Its totient is φ = 912584800.

The previous prime is 1025666471. The next prime is 1025666479. The reversal of 1025666477 is 7746665201.

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 1025666477 - 2¹² = 1025662381 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 (1025666471) 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 7 ways as a sum of consecutive naturals, for example, 991424 + ... + 992457.

It is an arithmetic number, because the mean of its divisors is an integer number (142839504).

Almost surely, 2^1025666477 is an apocalyptic number.

It is an amenable number.

1025666477 is a deficient number, since it is larger than the sum of its proper divisors (117049555).

1025666477 is a wasteful number, since it uses less digits than its factorization.

1025666477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983939.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 1025666477 is about 32026.0281177670. The cubic root of 1025666477 is about 1008.4833220742.

The spelling of 1025666477 in words is "one billion, twenty-five million, six hundred sixty-six thousand, four hundred seventy-seven".