70925421 has 8 divisors (see below), whose sum is σ = 108076864. Its totient is φ = 40528800.

The previous prime is 70925419. The next prime is 70925431. The reversal of 70925421 is 12452907.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70925421 - 2¹ = 70925419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70925431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688680 + ... + 1688721.

It is an arithmetic number, because the mean of its divisors is an integer number (13509608).

Almost surely, 2^70925421 is an apocalyptic number.

It is an amenable number.

70925421 is a deficient number, since it is larger than the sum of its proper divisors (37151443).

70925421 is a wasteful number, since it uses less digits than its factorization.

70925421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377411.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 70925421 is about 8421.7231609689. The cubic root of 70925421 is about 413.9367391496.

The spelling of 70925421 in words is "seventy million, nine hundred twenty-five thousand, four hundred twenty-one".