25128670 has 24 divisors (see below), whose sum is σ = 52617384. Its totient is φ = 8615376.

The previous prime is 25128667. The next prime is 25128671. The reversal of 25128670 is 7682152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25128671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25152 + ... + 26131.

It is an arithmetic number, because the mean of its divisors is an integer number (2192391).

Almost surely, 2^25128670 is an apocalyptic number.

25128670 is an abundant number, since it is smaller than the sum of its proper divisors (27488714).

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

25128670 is a wasteful number, since it uses less digits than its factorization.

25128670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51304 (or 51297 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 25128670 is about 5012.8504864997. The cubic root of 25128670 is about 292.9025601356.

The spelling of 25128670 in words is "twenty-five million, one hundred twenty-eight thousand, six hundred seventy".