70515225 has 48 divisors (see below), whose sum is σ = 141330240. Its totient is φ = 34185600.

The previous prime is 70515157. The next prime is 70515233. The reversal of 70515225 is 52251507.

It is a happy number.

It is not a de Polignac number, because 70515225 - 2⁹ = 70514713 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2677 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (2944380).

Almost surely, 2^70515225 is an apocalyptic number.

70515225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70515225 is an abundant number, since it is smaller than the sum of its proper divisors (70815015).

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

70515225 is a wasteful number, since it uses less digits than its factorization.

70515225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9527 (or 9516 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 70515225 is about 8397.3343984862. The cubic root of 70515225 is about 413.1371970204.

The spelling of 70515225 in words is "seventy million, five hundred fifteen thousand, two hundred twenty-five".