70425638 has 4 divisors (see below), whose sum is σ = 105638460. Its totient is φ = 35212818.

The previous prime is 70425631. The next prime is 70425653. The reversal of 70425638 is 83652407.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 70425598 and 70425607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70425631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17606408 + ... + 17606411.

It is an arithmetic number, because the mean of its divisors is an integer number (26409615).

Almost surely, 2^70425638 is an apocalyptic number.

70425638 is a deficient number, since it is larger than the sum of its proper divisors (35212822).

70425638 is a wasteful number, since it uses less digits than its factorization.

70425638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35212821.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 70425638 is about 8391.9984509055. The cubic root of 70425638 is about 412.9621643370.

The spelling of 70425638 in words is "seventy million, four hundred twenty-five thousand, six hundred thirty-eight".