70309925 has 12 divisors (see below), whose sum is σ = 99639456. Its totient is φ = 48212400.

The previous prime is 70309913. The next prime is 70309961. The reversal of 70309925 is 52990307.

It is not a de Polignac number, because 70309925 - 2¹⁴ = 70293541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200711 + ... + 201060.

It is an arithmetic number, because the mean of its divisors is an integer number (8303288).

Almost surely, 2^70309925 is an apocalyptic number.

It is an amenable number.

70309925 is a deficient number, since it is larger than the sum of its proper divisors (29329531).

70309925 is a wasteful number, since it uses less digits than its factorization.

70309925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401788 (or 401783 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 70309925 is about 8385.1013708840. The cubic root of 70309925 is about 412.7358675539.

The spelling of 70309925 in words is "seventy million, three hundred nine thousand, nine hundred twenty-five".