25315120 has 20 divisors (see below), whose sum is σ = 58857840. Its totient is φ = 10126016.

The previous prime is 25315117. The next prime is 25315123. The reversal of 25315120 is 2151352.

It is an interprime number because it is at equal distance from previous prime (25315117) and next prime (25315123).

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×25315120² = 1281710601228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315123) 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, 158140 + ... + 158299.

It is an arithmetic number, because the mean of its divisors is an integer number (2942892).

Almost surely, 2^25315120 is an apocalyptic number.

25315120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25315120 is an abundant number, since it is smaller than the sum of its proper divisors (33542720).

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

25315120 is a wasteful number, since it uses less digits than its factorization.

25315120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316452 (or 316446 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25315120 is about 5031.4133203306. The cubic root of 25315120 is about 293.6252030623.

Adding to 25315120 its reverse (2151352), we get a palindrome (27466472).

The spelling of 25315120 in words is "twenty-five million, three hundred fifteen thousand, one hundred twenty".