25465580 has 48 divisors (see below), whose sum is σ = 62173440. Its totient is φ = 8580288.

The previous prime is 25465579. The next prime is 25465597. The reversal of 25465580 is 8556452.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 25465580.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6719 + ... + 9801.

It is an arithmetic number, because the mean of its divisors is an integer number (1295280).

Almost surely, 2^25465580 is an apocalyptic number.

25465580 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 25465580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31086720).

25465580 is an abundant number, since it is smaller than the sum of its proper divisors (36707860).

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

25465580 is a wasteful number, since it uses less digits than its factorization.

25465580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 25465580 is about 5046.3432304987. The cubic root of 25465580 is about 294.2057732314.

The spelling of 25465580 in words is "twenty-five million, four hundred sixty-five thousand, five hundred eighty".