70279525 has 6 divisors (see below), whose sum is σ = 87146642. Its totient is φ = 56223600.

The previous prime is 70279487. The next prime is 70279529. The reversal of 70279525 is 52597207.

It can be written as a sum of positive squares in 3 ways, for example, as 690561 + 69588964 = 831^2 + 8342^2 .

It is not a de Polignac number, because 70279525 - 2¹¹ = 70277477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70279529) 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, 1405566 + ... + 1405615.

Almost surely, 2^70279525 is an apocalyptic number.

It is an amenable number.

70279525 is a deficient number, since it is larger than the sum of its proper divisors (16867117).

70279525 is a wasteful number, since it uses less digits than its factorization.

70279525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811191 (or 2811186 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 70279525 is about 8383.2884359301. The cubic root of 70279525 is about 412.6763739184.

The spelling of 70279525 in words is "seventy million, two hundred seventy-nine thousand, five hundred twenty-five".