1025651 has 4 divisors (see below), whose sum is σ = 1118904. Its totient is φ = 932400.

The previous prime is 1025641. The next prime is 1025653. The reversal of 1025651 is 1565201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025651 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025653) 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 3 ways as a sum of consecutive naturals, for example, 46610 + ... + 46631.

It is an arithmetic number, because the mean of its divisors is an integer number (279726).

2^1025651 is an apocalyptic number.

1025651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1025651 is a deficient number, since it is larger than the sum of its proper divisors (93253).

1025651 is an equidigital number, since it uses as much as digits as its factorization.

1025651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93252.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1025651 is about 1012.7442915169. The cubic root of 1025651 is about 100.8478249478.

The spelling of 1025651 in words is "one million, twenty-five thousand, six hundred fifty-one".