25461020 has 24 divisors (see below), whose sum is σ = 57581664. Its totient is φ = 9400896.

The previous prime is 25461017. The next prime is 25461049. The reversal of 25461020 is 2016452.

It is a happy number.

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 = 25460983 and 25461001.

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, 48704 + ... + 49223.

It is an arithmetic number, because the mean of its divisors is an integer number (2399236).

Almost surely, 2^25461020 is an apocalyptic number.

25461020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25461020 is an abundant number, since it is smaller than the sum of its proper divisors (32120644).

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

25461020 is a wasteful number, since it uses less digits than its factorization.

25461020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97949 (or 97947 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 25461020 is about 5045.8913979593. The cubic root of 25461020 is about 294.1882115081.

Adding to 25461020 its reverse (2016452), we get a palindrome (27477472).

The spelling of 25461020 in words is "twenty-five million, four hundred sixty-one thousand, twenty".