61707025 has 12 divisors (see below), whose sum is σ = 81018252. Its totient is φ = 46461440.

The previous prime is 61707017. The next prime is 61707029. The reversal of 61707025 is 52070716.

61707025 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 804609 + 60902416 = 897^2 + 7804^2 .

It is not a de Polignac number, because 61707025 - 2³ = 61707017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61706984 and 61707002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61707029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72172 + ... + 73021.

It is an arithmetic number, because the mean of its divisors is an integer number (6751521).

Almost surely, 2^61707025 is an apocalyptic number.

It is an amenable number.

61707025 is a deficient number, since it is larger than the sum of its proper divisors (19311227).

61707025 is a wasteful number, since it uses less digits than its factorization.

61707025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145220 (or 145215 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 61707025 is about 7855.3819130581. The cubic root of 61707025 is about 395.1647552839.

The spelling of 61707025 in words is "sixty-one million, seven hundred seven thousand, twenty-five".