696390025 has 6 divisors (see below), whose sum is σ = 863523662. Its totient is φ = 557112000.

The previous prime is 696389971. The next prime is 696390029. The reversal of 696390025 is 520093696.

It can be written as a sum of positive squares in 3 ways, for example, as 106337344 + 590052681 = 10312^2 + 24291^2 .

It is not a de Polignac number, because 696390025 - 2¹¹ = 696387977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 696390025.

It is not an unprimeable number, because it can be changed into a prime (696390029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13927776 + ... + 13927825.

Almost surely, 2^696390025 is an apocalyptic number.

It is an amenable number.

696390025 is a deficient number, since it is larger than the sum of its proper divisors (167133637).

696390025 is a wasteful number, since it uses less digits than its factorization.

696390025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27855611 (or 27855606 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 696390025 is about 26389.2028109983. The cubic root of 696390025 is about 886.3750316787.

The spelling of 696390025 in words is "six hundred ninety-six million, three hundred ninety thousand, twenty-five".