70402725 has 36 divisors (see below), whose sum is σ = 126965956. Its totient is φ = 37290240.

The previous prime is 70402721. The next prime is 70402741. The reversal of 70402725 is 52720407.

It can be written as a sum of positive squares in 6 ways, for example, as 1147041 + 69255684 = 1071^2 + 8322^2 .

It is not a de Polignac number, because 70402725 - 2² = 70402721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70402721) 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, 34329 + ... + 36321.

Almost surely, 2^70402725 is an apocalyptic number.

70402725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70402725 is a deficient number, since it is larger than the sum of its proper divisors (56563231).

70402725 is a wasteful number, since it uses less digits than its factorization.

70402725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 70402725 is about 8390.6331703871. The cubic root of 70402725 is about 412.9173736958.

The spelling of 70402725 in words is "seventy million, four hundred two thousand, seven hundred twenty-five".