25495020 has 96 divisors (see below), whose sum is σ = 81930240. Its totient is φ = 6575040.

The previous prime is 25495007. The next prime is 25495033. The reversal of 25495020 is 2059452.

It is an interprime number because it is at equal distance from previous prime (25495007) and next prime (25495033).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 15979 + ... + 17501.

It is an arithmetic number, because the mean of its divisors is an integer number (853440).

Almost surely, 2^25495020 is an apocalyptic number.

25495020 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 25495020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40965120).

25495020 is an abundant number, since it is smaller than the sum of its proper divisors (56435220).

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

25495020 is a wasteful number, since it uses less digits than its factorization.

25495020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25495020 is about 5049.2593516277. The cubic root of 25495020 is about 294.3191037527.

It can be divided in two parts, 2549 and 5020, that added together give a square (7569 = 87²).

The spelling of 25495020 in words is "twenty-five million, four hundred ninety-five thousand, twenty".