25222580 has 18 divisors (see below), whose sum is σ = 53014626. Its totient is φ = 10080048.

The previous prime is 25222573. The next prime is 25222583. The reversal of 25222580 is 8522252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20178064 + 5044516 = 4492^2 + 2246^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21899 + ... + 23021.

It is an arithmetic number, because the mean of its divisors is an integer number (2945257).

Almost surely, 2^25222580 is an apocalyptic number.

25222580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25222580 is an abundant number, since it is smaller than the sum of its proper divisors (27792046).

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

25222580 is an equidigital number, since it uses as much as digits as its factorization.

25222580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 25222580 is about 5022.2086774645. The cubic root of 25222580 is about 293.2669816637.

The spelling of 25222580 in words is "twenty-five million, two hundred twenty-two thousand, five hundred eighty".