25764492 has 48 divisors (see below), whose sum is σ = 65070432. Its totient is φ = 7887360.

The previous prime is 25764457. The next prime is 25764493. The reversal of 25764492 is 29446752.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 25764492.

It is not an unprimeable number, because it can be changed into a prime (25764493) 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, 49192 + ... + 49712.

It is an arithmetic number, because the mean of its divisors is an integer number (1355634).

Almost surely, 2^25764492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25764492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32535216).

25764492 is an abundant number, since it is smaller than the sum of its proper divisors (39305940).

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

25764492 is a wasteful number, since it uses less digits than its factorization.

25764492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 856 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 25764492 is about 5075.8735208829. The cubic root of 25764492 is about 295.3524161324.

The spelling of 25764492 in words is "twenty-five million, seven hundred sixty-four thousand, four hundred ninety-two".