25516120 has 32 divisors (see below), whose sum is σ = 65613600. Its totient is φ = 8748288.

The previous prime is 25516103. The next prime is 25516123. The reversal of 25516120 is 2161552.

It is a junction number, because it is equal to n+sod(n) for n = 25516091 and 25516100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25516123) 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, 45285 + ... + 45844.

It is an arithmetic number, because the mean of its divisors is an integer number (2050425).

Almost surely, 2^25516120 is an apocalyptic number.

25516120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25516120 is an abundant number, since it is smaller than the sum of its proper divisors (40097480).

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

25516120 is a wasteful number, since it uses less digits than its factorization.

25516120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91147 (or 91143 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 25516120 is about 5051.3483348508. The cubic root of 25516120 is about 294.4002754310.

Adding to 25516120 its reverse (2161552), we get a palindrome (27677672).

The spelling of 25516120 in words is "twenty-five million, five hundred sixteen thousand, one hundred twenty".