70013925 has 18 divisors (see below), whose sum is σ = 125403122. Its totient is φ = 37340640.

The previous prime is 70013893. The next prime is 70013929. The reversal of 70013925 is 52931007.

It can be written as a sum of positive squares in 3 ways, for example, as 4743684 + 65270241 = 2178^2 + 8079^2 .

It is not a de Polignac number, because 70013925 - 2⁵ = 70013893 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 (70013929) 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 17 ways as a sum of consecutive naturals, for example, 155362 + ... + 155811.

Almost surely, 2^70013925 is an apocalyptic number.

70013925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70013925 is a deficient number, since it is larger than the sum of its proper divisors (55389197).

70013925 is a wasteful number, since it uses less digits than its factorization.

70013925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311189 (or 311181 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 70013925 is about 8367.4324018781. The cubic root of 70013925 is about 412.1558562155.

The spelling of 70013925 in words is "seventy million, thirteen thousand, nine hundred twenty-five".