695421949625 has 72 divisors (see below), whose sum is σ = 947795658264. Its totient is φ = 506417760000.

The previous prime is 695421949613. The next prime is 695421949667. The reversal of 695421949625 is 526949124596.

695421949625 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 12 ways, for example, as 555525752896 + 139896196729 = 745336^2 + 374027^2 .

It is a de Polignac number, because none of the positive numbers 2^k-695421949625 is a prime.

It is a super-2 number, since 2×695421949625² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4605443300 + ... + 4605443450.

It is an arithmetic number, because the mean of its divisors is an integer number (13163828587).

Almost surely, 2^695421949625 is an apocalyptic number.

695421949625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

695421949625 is a deficient number, since it is larger than the sum of its proper divisors (252373708639).

695421949625 is an equidigital number, since it uses as much as digits as its factorization.

695421949625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 306 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 62.

The spelling of 695421949625 in words is "six hundred ninety-five billion, four hundred twenty-one million, nine hundred forty-nine thousand, six hundred twenty-five".