25254452305 has 8 divisors (see below), whose sum is σ = 31124406312. Its totient is φ = 19657519488.

The previous prime is 25254452303. The next prime is 25254452329. The reversal of 25254452305 is 50325445252.

It can be written as a sum of positive squares in 4 ways, for example, as 7132984849 + 18121467456 = 84457^2 + 134616^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25254452305 - 2¹ = 25254452303 is a prime.

It is a super-2 number, since 2×25254452305² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25254452303) 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, 68255092 + ... + 68255461.

It is an arithmetic number, because the mean of its divisors is an integer number (3890550789).

Almost surely, 2^25254452305 is an apocalyptic number.

It is an amenable number.

25254452305 is a deficient number, since it is larger than the sum of its proper divisors (5869954007).

25254452305 is a wasteful number, since it uses less digits than its factorization.

25254452305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136510595.

The product of its (nonzero) digits is 240000, while the sum is 37.

Adding to 25254452305 its reverse (50325445252), we get a palindrome (75579897557).

The spelling of 25254452305 in words is "twenty-five billion, two hundred fifty-four million, four hundred fifty-two thousand, three hundred five".