25239460 has 12 divisors (see below), whose sum is σ = 53002908. Its totient is φ = 10095776.

The previous prime is 25239451. The next prime is 25239479. The reversal of 25239460 is 6493252.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 9998244 = 3904^2 + 3162^2 .

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 3 ways as a sum of consecutive naturals, for example, 630967 + ... + 631006.

It is an arithmetic number, because the mean of its divisors is an integer number (4416909).

Almost surely, 2^25239460 is an apocalyptic number.

25239460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25239460 is an abundant number, since it is smaller than the sum of its proper divisors (27763448).

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

25239460 is a wasteful number, since it uses less digits than its factorization.

25239460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261982 (or 1261980 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 25239460 is about 5023.8889318933. Note that the first 3 decimals coincide. The cubic root of 25239460 is about 293.3323892302.

The spelling of 25239460 in words is "twenty-five million, two hundred thirty-nine thousand, four hundred sixty".