694189025 has 12 divisors (see below), whose sum is σ = 861727212. Its totient is φ = 554749440.

The previous prime is 694189021. The next prime is 694189049. The reversal of 694189025 is 520981496.

694189025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3182656 + 691006369 = 1784^2 + 26287^2 .

It is not a de Polignac number, because 694189025 - 2² = 694189021 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694189021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9257 + ... + 38393.

It is an arithmetic number, because the mean of its divisors is an integer number (71810601).

Almost surely, 2^694189025 is an apocalyptic number.

It is an amenable number.

694189025 is a deficient number, since it is larger than the sum of its proper divisors (167538187).

694189025 is a wasteful number, since it uses less digits than its factorization.

694189025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30100 (or 30095 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 694189025 is about 26347.4671458188. The cubic root of 694189025 is about 885.4402248741.

The spelling of 694189025 in words is "six hundred ninety-four million, one hundred eighty-nine thousand, twenty-five".