25405464 has 64 divisors (see below), whose sum is σ = 73382400. Its totient is φ = 7179264.

The previous prime is 25405441. The next prime is 25405469. The reversal of 25405464 is 46450452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25405469) 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, 15517 + ... + 17075.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^25405464 is an apocalyptic number.

25405464 is a gapful number since it is divisible by the number (24) 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 25405464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36691200).

25405464 is an abundant number, since it is smaller than the sum of its proper divisors (47976936).

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

25405464 is a wasteful number, since it uses less digits than its factorization.

25405464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 25405464 is about 5040.3833187566. The cubic root of 25405464 is about 293.9740825874.

The spelling of 25405464 in words is "twenty-five million, four hundred five thousand, four hundred sixty-four".