25909464 has 64 divisors (see below), whose sum is σ = 77932800. Its totient is φ = 7012224.

The previous prime is 25909463. The next prime is 25909469. The reversal of 25909464 is 46490952.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25909463) 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, 867 + ... + 7250.

It is an arithmetic number, because the mean of its divisors is an integer number (1217700).

Almost surely, 2^25909464 is an apocalyptic number.

25909464 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 25909464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38966400).

25909464 is an abundant number, since it is smaller than the sum of its proper divisors (52023336).

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

25909464 is a wasteful number, since it uses less digits than its factorization.

25909464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8152 (or 8148 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 25909464 is about 5090.1339864487. The cubic root of 25909464 is about 295.9053447038.

The spelling of 25909464 in words is "twenty-five million, nine hundred nine thousand, four hundred sixty-four".