25315420 has 24 divisors (see below), whose sum is σ = 57252384. Its totient is φ = 9347136.

The previous prime is 25315403. The next prime is 25315421. The reversal of 25315420 is 2451352.

It is a junction number, because it is equal to n+sod(n) for n = 25315391 and 25315400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48424 + ... + 48943.

It is an arithmetic number, because the mean of its divisors is an integer number (2385516).

Almost surely, 2^25315420 is an apocalyptic number.

25315420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25315420 is an abundant number, since it is smaller than the sum of its proper divisors (31936964).

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

25315420 is a wasteful number, since it uses less digits than its factorization.

25315420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97389 (or 97387 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25315420 is about 5031.4431329391. The cubic root of 25315420 is about 293.6263629385.

Adding to 25315420 its reverse (2451352), we get a palindrome (27766772).

The spelling of 25315420 in words is "twenty-five million, three hundred fifteen thousand, four hundred twenty".