25670320 has 40 divisors (see below), whose sum is σ = 64277136. Its totient is φ = 9477888.

The previous prime is 25670299. The next prime is 25670347. The reversal of 25670320 is 2307652.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11302 + ... + 13381.

Almost surely, 2^25670320 is an apocalyptic number.

25670320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25670320 is an abundant number, since it is smaller than the sum of its proper divisors (38606816).

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

25670320 is a wasteful number, since it uses less digits than its factorization.

25670320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24709 (or 24703 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 25670320 is about 5066.5885958897. The cubic root of 25670320 is about 294.9921284886.

Adding to 25670320 its reverse (2307652), we get a palindrome (27977972).

The spelling of 25670320 in words is "twenty-five million, six hundred seventy thousand, three hundred twenty".