25276840 has 64 divisors (see below), whose sum is σ = 60768000. Its totient is φ = 9434880.

The previous prime is 25276837. The next prime is 25276847. The reversal of 25276840 is 4867252.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 25276796 and 25276805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25276847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59830 + ... + 60250.

It is an arithmetic number, because the mean of its divisors is an integer number (949500).

Almost surely, 2^25276840 is an apocalyptic number.

25276840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25276840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30384000).

25276840 is an abundant number, since it is smaller than the sum of its proper divisors (35491160).

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

25276840 is a wasteful number, since it uses less digits than its factorization.

25276840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 25276840 is about 5027.6077810426. The cubic root of 25276840 is about 293.4771276169.

The spelling of 25276840 in words is "twenty-five million, two hundred seventy-six thousand, eight hundred forty".