25069905 has 80 divisors (see below), whose sum is σ = 52968960. Its totient is φ = 11104128.

The previous prime is 25069897. The next prime is 25069907. The reversal of 25069905 is 50996052.

It is not a de Polignac number, because 25069905 - 2³ = 25069897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25069905.

It is not an unprimeable number, because it can be changed into a prime (25069907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 104776 + ... + 105014.

It is an arithmetic number, because the mean of its divisors is an integer number (662112).

Almost surely, 2^25069905 is an apocalyptic number.

It is an amenable number.

25069905 is an abundant number, since it is smaller than the sum of its proper divisors (27899055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25069905 is a wasteful number, since it uses less digits than its factorization.

25069905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 25069905 is about 5006.9856201112. The cubic root of 25069905 is about 292.6740581383.

The spelling of 25069905 in words is "twenty-five million, sixty-nine thousand, nine hundred five".