70525121 has 4 divisors (see below), whose sum is σ = 70629972. Its totient is φ = 70420272.

The previous prime is 70525109. The next prime is 70525151. The reversal of 70525121 is 12152507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12152507 = 769 ⋅15803.

It can be written as a sum of positive squares in 2 ways, for example, as 51480625 + 19044496 = 7175^2 + 4364^2 .

It is a cyclic number.

It is not a de Polignac number, because 70525121 - 2¹⁸ = 70262977 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 51410 + ... + 52763.

It is an arithmetic number, because the mean of its divisors is an integer number (17657493).

Almost surely, 2^70525121 is an apocalyptic number.

It is an amenable number.

70525121 is a deficient number, since it is larger than the sum of its proper divisors (104851).

70525121 is a wasteful number, since it uses less digits than its factorization.

70525121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104850.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 70525121 is about 8397.9236124175. The cubic root of 70525121 is about 413.1565224661.

Adding to 70525121 its reverse (12152507), we get a palindrome (82677628).

The spelling of 70525121 in words is "seventy million, five hundred twenty-five thousand, one hundred twenty-one".