25384420 has 12 divisors (see below), whose sum is σ = 53307324. Its totient is φ = 10153760.

The previous prime is 25384393. The next prime is 25384423. The reversal of 25384420 is 2448352.

It can be written as a sum of positive squares in 2 ways, for example, as 8145316 + 17239104 = 2854^2 + 4152^2 .

It is not an unprimeable number, because it can be changed into a prime (25384423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634591 + ... + 634630.

It is an arithmetic number, because the mean of its divisors is an integer number (4442277).

Almost surely, 2^25384420 is an apocalyptic number.

25384420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25384420 is an abundant number, since it is smaller than the sum of its proper divisors (27922904).

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

25384420 is a wasteful number, since it uses less digits than its factorization.

25384420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269230 (or 1269228 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 25384420 is about 5038.2953466426. The cubic root of 25384420 is about 293.8928913983.

The spelling of 25384420 in words is "twenty-five million, three hundred eighty-four thousand, four hundred twenty".