70225920 has 208 divisors, whose sum is σ = 251627520. Its totient is φ = 18579456.

The previous prime is 70225891. The next prime is 70225921. The reversal of 70225920 is 2952207.

It is a happy number.

70225920 is a `hidden beast` number, since 70 + 2 + 2 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70225921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552897 + ... + 553023.

Almost surely, 2^70225920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70225920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125813760).

70225920 is an abundant number, since it is smaller than the sum of its proper divisors (181401600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70225920 is a wasteful number, since it uses less digits than its factorization.

70225920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 70225920 is about 8380.0906916334. The cubic root of 70225920 is about 412.5714256482.

The spelling of 70225920 in words is "seventy million, two hundred twenty-five thousand, nine hundred twenty".