5425509685 has 4 divisors (see below), whose sum is σ = 6510611628. Its totient is φ = 4340407744.

The previous prime is 5425509673. The next prime is 5425509697. The reversal of 5425509685 is 5869055245.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (5425509673) and next prime (5425509697).

It can be written as a sum of positive squares in 2 ways, for example, as 2805503089 + 2620006596 = 52967^2 + 51186^2 .

It is a cyclic number.

It is not a de Polignac number, because 5425509685 - 2¹³ = 5425501493 is a prime.

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, 542550964 + ... + 542550973.

It is an arithmetic number, because the mean of its divisors is an integer number (1627652907).

Almost surely, 2^5425509685 is an apocalyptic number.

It is an amenable number.

5425509685 is a deficient number, since it is larger than the sum of its proper divisors (1085101943).

5425509685 is a wasteful number, since it uses less digits than its factorization.

5425509685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085101942.

The product of its (nonzero) digits is 2160000, while the sum is 49.

The square root of 5425509685 is about 73658.0591992485. The cubic root of 5425509685 is about 1757.1689252512.

The spelling of 5425509685 in words is "five billion, four hundred twenty-five million, five hundred nine thousand, six hundred eighty-five".