25140730 has 8 divisors (see below), whose sum is σ = 45253332. Its totient is φ = 10056288.

The previous prime is 25140707. The next prime is 25140737. The reversal of 25140730 is 3704152.

It can be written as a sum of positive squares in 2 ways, for example, as 24930049 + 210681 = 4993^2 + 459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25140737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257027 + ... + 1257046.

Almost surely, 2^25140730 is an apocalyptic number.

25140730 is a deficient number, since it is larger than the sum of its proper divisors (20112602).

25140730 is a wasteful number, since it uses less digits than its factorization.

25140730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514080.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25140730 is about 5014.0532506147. The cubic root of 25140730 is about 292.9494102066.

Adding to 25140730 its reverse (3704152), we get a palindrome (28844882).

The spelling of 25140730 in words is "twenty-five million, one hundred forty thousand, seven hundred thirty".