25732664 has 8 divisors (see below), whose sum is σ = 48248760. Its totient is φ = 12866328.

The previous prime is 25732661. The next prime is 25732687. The reversal of 25732664 is 46623752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25732661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608284 + ... + 1608299.

It is an arithmetic number, because the mean of its divisors is an integer number (6031095).

Almost surely, 2^25732664 is an apocalyptic number.

It is an amenable number.

25732664 is a deficient number, since it is larger than the sum of its proper divisors (22516096).

25732664 is a wasteful number, since it uses less digits than its factorization.

25732664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216589 (or 3216585 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 25732664 is about 5072.7373281099. The cubic root of 25732664 is about 295.2307454458.

The spelling of 25732664 in words is "twenty-five million, seven hundred thirty-two thousand, six hundred sixty-four".