70143525 has 18 divisors (see below), whose sum is σ = 125635250. Its totient is φ = 37409760.

The previous prime is 70143523. The next prime is 70143551. The reversal of 70143525 is 52534107.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11068929 + 59074596 = 3327^2 + 7686^2 .

It is not a de Polignac number, because 70143525 - 2¹ = 70143523 is a prime.

It is a super-2 number, since 2×70143525² = 9840228198851250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70143523) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 155650 + ... + 156099.

Almost surely, 2^70143525 is an apocalyptic number.

70143525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70143525 is a deficient number, since it is larger than the sum of its proper divisors (55491725).

70143525 is a wasteful number, since it uses less digits than its factorization.

70143525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311765 (or 311757 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 70143525 is about 8375.1731325388. The cubic root of 70143525 is about 412.4100079167.

The spelling of 70143525 in words is "seventy million, one hundred forty-three thousand, five hundred twenty-five".