70878525 has 48 divisors (see below), whose sum is σ = 129527424. Its totient is φ = 34017280.

The previous prime is 70878503. The next prime is 70878527. The reversal of 70878525 is 52587807.

It is a happy number.

It is not a de Polignac number, because 70878525 - 2⁶ = 70878461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70878527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28117 + ... + 30533.

It is an arithmetic number, because the mean of its divisors is an integer number (2698488).

Almost surely, 2^70878525 is an apocalyptic number.

70878525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70878525 is a deficient number, since it is larger than the sum of its proper divisors (58648899).

70878525 is a wasteful number, since it uses less digits than its factorization.

70878525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 70878525 is about 8418.9384722778. The cubic root of 70878525 is about 413.8454871602.

The spelling of 70878525 in words is "seventy million, eight hundred seventy-eight thousand, five hundred twenty-five".