70123525 has 6 divisors (see below), whose sum is σ = 86953202. Its totient is φ = 56098800.

The previous prime is 70123513. The next prime is 70123553. The reversal of 70123525 is 52532107.

It can be written as a sum of positive squares in 3 ways, for example, as 917764 + 69205761 = 958^2 + 8319^2 .

It is a de Polignac number, because none of the positive numbers 2^k-70123525 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2804941 = 70123525 / (7 + 0 + 1 + 2 + 3 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70123525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1402446 + ... + 1402495.

Almost surely, 2^70123525 is an apocalyptic number.

It is an amenable number.

70123525 is a deficient number, since it is larger than the sum of its proper divisors (16829677).

70123525 is a wasteful number, since it uses less digits than its factorization.

70123525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804951 (or 2804946 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 70123525 is about 8373.9790422475. The cubic root of 70123525 is about 412.3708074145.

The spelling of 70123525 in words is "seventy million, one hundred twenty-three thousand, five hundred twenty-five".