78650725 has 6 divisors (see below), whose sum is σ = 97526930. Its totient is φ = 62920560.

The previous prime is 78650723. The next prime is 78650753. The reversal of 78650725 is 52705687.

It can be written as a sum of positive squares in 3 ways, for example, as 26204161 + 52446564 = 5119^2 + 7242^2 .

It is not a de Polignac number, because 78650725 - 2¹ = 78650723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78650723) 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, 1572990 + ... + 1573039.

Almost surely, 2^78650725 is an apocalyptic number.

It is an amenable number.

78650725 is a deficient number, since it is larger than the sum of its proper divisors (18876205).

78650725 is a wasteful number, since it uses less digits than its factorization.

78650725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146039 (or 3146034 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 78650725 is about 8868.5243981172. The cubic root of 78650725 is about 428.4507526638.

The spelling of 78650725 in words is "seventy-eight million, six hundred fifty thousand, seven hundred twenty-five".