70538525 has 24 divisors (see below), whose sum is σ = 93107880. Its totient is φ = 52828160.

The previous prime is 70538519. The next prime is 70538543. The reversal of 70538525 is 52583507.

It can be written as a sum of positive squares in 12 ways, for example, as 47141956 + 23396569 = 6866^2 + 4837^2 .

It is not a de Polignac number, because 70538525 - 2⁸ = 70538269 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114017 + ... + 114633.

It is an arithmetic number, because the mean of its divisors is an integer number (3879495).

Almost surely, 2^70538525 is an apocalyptic number.

It is an amenable number.

70538525 is a deficient number, since it is larger than the sum of its proper divisors (22569355).

70538525 is a wasteful number, since it uses less digits than its factorization.

70538525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 70538525 is about 8398.7216289147. The cubic root of 70538525 is about 413.1826956421.

The spelling of 70538525 in words is "seventy million, five hundred thirty-eight thousand, five hundred twenty-five".