25761020 has 12 divisors (see below), whose sum is σ = 54098184. Its totient is φ = 10304400.

The previous prime is 25761013. The next prime is 25761023. The reversal of 25761020 is 2016752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25761023) 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, 644006 + ... + 644045.

It is an arithmetic number, because the mean of its divisors is an integer number (4508182).

Almost surely, 2^25761020 is an apocalyptic number.

25761020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25761020 is an abundant number, since it is smaller than the sum of its proper divisors (28337164).

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

25761020 is a wasteful number, since it uses less digits than its factorization.

25761020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288060 (or 1288058 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 25761020 is about 5075.5314992619. The cubic root of 25761020 is about 295.3391483935.

Adding to 25761020 its reverse (2016752), we get a palindrome (27777772).

The spelling of 25761020 in words is "twenty-five million, seven hundred sixty-one thousand, twenty".