25433780 has 24 divisors (see below), whose sum is σ = 56222880. Its totient is φ = 9637920.

The previous prime is 25433777. The next prime is 25433789. The reversal of 25433780 is 8733452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25433789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33086 + ... + 33845.

It is an arithmetic number, because the mean of its divisors is an integer number (2342620).

Almost surely, 2^25433780 is an apocalyptic number.

25433780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25433780 is an abundant number, since it is smaller than the sum of its proper divisors (30789100).

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

25433780 is a wasteful number, since it uses less digits than its factorization.

25433780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66959 (or 66957 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 25433780 is about 5043.1914498658. The cubic root of 25433780 is about 294.0832596189.

The spelling of 25433780 in words is "twenty-five million, four hundred thirty-three thousand, seven hundred eighty".