70445025 has 96 divisors (see below), whose sum is σ = 156775680. Its totient is φ = 30274560.

The previous prime is 70445017. The next prime is 70445047. The reversal of 70445025 is 52054407.

It is not a de Polignac number, because 70445025 - 2³ = 70445017 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 70445025.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79887 + ... + 80763.

It is an arithmetic number, because the mean of its divisors is an integer number (1633080).

Almost surely, 2^70445025 is an apocalyptic number.

70445025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70445025 is an abundant number, since it is smaller than the sum of its proper divisors (86330655).

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

70445025 is a wasteful number, since it uses less digits than its factorization.

70445025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 70445025 is about 8393.1534598147. The cubic root of 70445025 is about 413.0000547188. Note that the first 4 decimals are identical.

The spelling of 70445025 in words is "seventy million, four hundred forty-five thousand, twenty-five".