25123120 has 40 divisors (see below), whose sum is σ = 63723600. Its totient is φ = 9135360.

The previous prime is 25123103. The next prime is 25123129. The reversal of 25123120 is 2132152.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 25123094 and 25123103.

It is not an unprimeable number, because it can be changed into a prime (25123129) 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, 13395 + ... + 15154.

It is an arithmetic number, because the mean of its divisors is an integer number (1593090).

Almost surely, 2^25123120 is an apocalyptic number.

25123120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25123120 is an abundant number, since it is smaller than the sum of its proper divisors (38600480).

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

25123120 is a wasteful number, since it uses less digits than its factorization.

25123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28573 (or 28567 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25123120 is about 5012.2968786775. The cubic root of 25123120 is about 292.8809947430.

Adding to 25123120 its reverse (2132152), we get a palindrome (27255272).

The spelling of 25123120 in words is "twenty-five million, one hundred twenty-three thousand, one hundred twenty".