70525161 has 36 divisors (see below), whose sum is σ = 122911152. Its totient is φ = 40293288.

The previous prime is 70525151. The next prime is 70525181. The reversal of 70525161 is 16152507.

It is not a de Polignac number, because 70525161 - 2²² = 66330857 is a prime.

It is a super-3 number, since 3×70525161³ (a number of 25 digits) contains 333 as substring.

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 (70525151) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8946 + ... + 14868.

Almost surely, 2^70525161 is an apocalyptic number.

It is an amenable number.

70525161 is a deficient number, since it is larger than the sum of its proper divisors (52385991).

70525161 is an equidigital number, since it uses as much as digits as its factorization.

70525161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952 (or 5933 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 70525161 is about 8397.9259939583. The cubic root of 70525161 is about 413.1566005766.

Adding to 70525161 its reverse (16152507), we get a palindrome (86677668).

The spelling of 70525161 in words is "seventy million, five hundred twenty-five thousand, one hundred sixty-one".