25247430 has 64 divisors (see below), whose sum is σ = 72515520. Its totient is φ = 6213888.

The previous prime is 25247419. The next prime is 25247437. The reversal of 25247430 is 3474252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25247394 and 25247403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25247437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87 + ... + 7106.

It is an arithmetic number, because the mean of its divisors is an integer number (1133055).

Almost surely, 2^25247430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25247430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36257760).

25247430 is an abundant number, since it is smaller than the sum of its proper divisors (47268090).

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

25247430 is a wasteful number, since it uses less digits than its factorization.

25247430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222 (or 7216 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 25247430 is about 5024.6820794952. The cubic root of 25247430 is about 293.3632616961.

The spelling of 25247430 in words is "twenty-five million, two hundred forty-seven thousand, four hundred thirty".