1051425685 has 4 divisors (see below), whose sum is σ = 1261710828. Its totient is φ = 841140544.

The previous prime is 1051425659. The next prime is 1051425701. The reversal of 1051425685 is 5865241501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 226472401 + 824953284 = 15049^2 + 28722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051425685 - 2¹⁷ = 1051294613 is a prime.

It is a super-2 number, since 2×1051425685² = 2210991942155438450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105142564 + ... + 105142573.

It is an arithmetic number, because the mean of its divisors is an integer number (315427707).

Almost surely, 2^1051425685 is an apocalyptic number.

It is an amenable number.

1051425685 is a deficient number, since it is larger than the sum of its proper divisors (210285143).

1051425685 is an equidigital number, since it uses as much as digits as its factorization.

1051425685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210285142.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 1051425685 is about 32425.6948267882. The cubic root of 1051425685 is about 1016.8561681455.

The spelling of 1051425685 in words is "one billion, fifty-one million, four hundred twenty-five thousand, six hundred eighty-five".