25279620 has 48 divisors (see below), whose sum is σ = 71953728. Its totient is φ = 6629760.

The previous prime is 25279613. The next prime is 25279627. The reversal of 25279620 is 2697252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25279613) and next prime (25279627).

It is not an unprimeable number, because it can be changed into a prime (25279627) 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, 207 + ... + 7113.

It is an arithmetic number, because the mean of its divisors is an integer number (1499036).

Almost surely, 2^25279620 is an apocalyptic number.

25279620 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 25279620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35976864).

25279620 is an abundant number, since it is smaller than the sum of its proper divisors (46674108).

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

25279620 is a wasteful number, since it uses less digits than its factorization.

25279620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980 (or 6978 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 25279620 is about 5027.8842468776. The cubic root of 25279620 is about 293.4878862997.

The spelling of 25279620 in words is "twenty-five million, two hundred seventy-nine thousand, six hundred twenty".