70915025 has 6 divisors (see below), whose sum is σ = 87934662. Its totient is φ = 56732000.

The previous prime is 70915021. The next prime is 70915037. The reversal of 70915025 is 52051907.

It can be written as a sum of positive squares in 3 ways, for example, as 18671041 + 52243984 = 4321^2 + 7228^2 .

It is not a de Polignac number, because 70915025 - 2² = 70915021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70915021) 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, 1418276 + ... + 1418325.

It is an arithmetic number, because the mean of its divisors is an integer number (14655777).

Almost surely, 2^70915025 is an apocalyptic number.

It is an amenable number.

70915025 is a deficient number, since it is larger than the sum of its proper divisors (17019637).

70915025 is a wasteful number, since it uses less digits than its factorization.

70915025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836611 (or 2836606 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 70915025 is about 8421.1059249958. The cubic root of 70915025 is about 413.9165136952.

The spelling of 70915025 in words is "seventy million, nine hundred fifteen thousand, twenty-five".