68556025 has 6 divisors (see below), whose sum is σ = 85009502. Its totient is φ = 54844800.

The previous prime is 68556023. The next prime is 68556139. The reversal of 68556025 is 52065586.

It can be written as a sum of positive squares in 3 ways, for example, as 5067001 + 63489024 = 2251^2 + 7968^2 .

It is not a de Polignac number, because 68556025 - 2¹ = 68556023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68556023) 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, 1371096 + ... + 1371145.

Almost surely, 2^68556025 is an apocalyptic number.

It is an amenable number.

68556025 is a deficient number, since it is larger than the sum of its proper divisors (16453477).

68556025 is a wasteful number, since it uses less digits than its factorization.

68556025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742251 (or 2742246 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 68556025 is about 8279.8565808835. The cubic root of 68556025 is about 409.2749927611.

It can be divided in two parts, 6855 and 6025, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 68556025 in words is "sixty-eight million, five hundred fifty-six thousand, twenty-five".