25020920 has 32 divisors (see below), whose sum is σ = 57499200. Its totient is φ = 9794688.

The previous prime is 25020901. The next prime is 25020943. The reversal of 25020920 is 2902052.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 25020892 and 25020901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4775 + ... + 8534.

It is an arithmetic number, because the mean of its divisors is an integer number (1796850).

Almost surely, 2^25020920 is an apocalyptic number.

25020920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25020920 is an abundant number, since it is smaller than the sum of its proper divisors (32478280).

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

25020920 is a wasteful number, since it uses less digits than its factorization.

25020920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367 (or 13363 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 25020920 is about 5002.0915625366. The cubic root of 25020920 is about 292.4833116833.

Adding to 25020920 its reverse (2902052), we get a palindrome (27922972).

The spelling of 25020920 in words is "twenty-five million, twenty thousand, nine hundred twenty".