25387620 has 24 divisors (see below), whose sum is σ = 71085504. Its totient is φ = 6770016.

The previous prime is 25387619. The next prime is 25387631. The reversal of 25387620 is 2678352.

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, 211504 + ... + 211623.

It is an arithmetic number, because the mean of its divisors is an integer number (2961896).

Almost surely, 2^25387620 is an apocalyptic number.

25387620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25387620 is an abundant number, since it is smaller than the sum of its proper divisors (45697884).

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

25387620 is a wasteful number, since it uses less digits than its factorization.

25387620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423139 (or 423137 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25387620 is about 5038.6129043617. The cubic root of 25387620 is about 293.9052404131.

The spelling of 25387620 in words is "twenty-five million, three hundred eighty-seven thousand, six hundred twenty".