25672420 has 24 divisors (see below), whose sum is σ = 56750400. Its totient is φ = 9728352.

The previous prime is 25672417. The next prime is 25672447. The reversal of 25672420 is 2427652.

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, 33400 + ... + 34159.

It is an arithmetic number, because the mean of its divisors is an integer number (2364600).

Almost surely, 2^25672420 is an apocalyptic number.

25672420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25672420 is an abundant number, since it is smaller than the sum of its proper divisors (31077980).

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

25672420 is a wasteful number, since it uses less digits than its factorization.

25672420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67587 (or 67585 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 25672420 is about 5066.7958316869. The cubic root of 25672420 is about 295.0001723642. Note that the first 3 decimals are identical.

The spelling of 25672420 in words is "twenty-five million, six hundred seventy-two thousand, four hundred twenty".