25229572730 has 32 divisors (see below), whose sum is σ = 45995867280. Its totient is φ = 9963025920.

The previous prime is 25229572723. The next prime is 25229572741. The reversal of 25229572730 is 3727592252.

It can be written as a sum of positive squares in 8 ways, for example, as 5049381481 + 20180191249 = 71059^2 + 142057^2 .

It is a super-4 number, since 4×25229572730⁴ (a number of 43 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260150 + ... + 343710.

Almost surely, 2^25229572730 is an apocalyptic number.

25229572730 is a deficient number, since it is larger than the sum of its proper divisors (20766294550).

25229572730 is a wasteful number, since it uses less digits than its factorization.

25229572730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83954.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 25229572730 in words is "twenty-five billion, two hundred twenty-nine million, five hundred seventy-two thousand, seven hundred thirty".