70025280 has 224 divisors, whose sum is σ = 248521728. Its totient is φ = 16588800.

The previous prime is 70025269. The next prime is 70025303. The reversal of 70025280 is 8252007.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 70025280.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386790 + ... + 386970.

It is an arithmetic number, because the mean of its divisors is an integer number (1109472).

Almost surely, 2^70025280 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 70025280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124260864).

70025280 is an abundant number, since it is smaller than the sum of its proper divisors (178496448).

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

70025280 is a wasteful number, since it uses less digits than its factorization.

70025280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 70025280 is about 8368.1108979267. The cubic root of 70025280 is about 412.1781364346.

Adding to 70025280 its reverse (8252007), we get a palindrome (78277287).

The spelling of 70025280 in words is "seventy million, twenty-five thousand, two hundred eighty".