83250715025 has 24 divisors (see below), whose sum is σ = 106083456504. Its totient is φ = 64762329600.

The previous prime is 83250715021. The next prime is 83250715027. The reversal of 83250715025 is 52051705238.

It is a Cunningham number, because it is equal to 288532²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 15425888401 + 67824826624 = 124201^2 + 260432^2 .

It is not a de Polignac number, because 83250715025 - 2² = 83250715021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83250715025.

It is not an unprimeable number, because it can be changed into a prime (83250715021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1595855 + ... + 1647195.

It is an arithmetic number, because the mean of its divisors is an integer number (4420144021).

Almost surely, 2^83250715025 is an apocalyptic number.

It is an amenable number.

83250715025 is a deficient number, since it is larger than the sum of its proper divisors (22832741479).

83250715025 is a wasteful number, since it uses less digits than its factorization.

83250715025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53141 (or 53136 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 83250715025 in words is "eighty-three billion, two hundred fifty million, seven hundred fifteen thousand, twenty-five".