25012054345 has 4 divisors (see below), whose sum is σ = 30014465220. Its totient is φ = 20009643472.

The previous prime is 25012054307. The next prime is 25012054349. The reversal of 25012054345 is 54345021052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12273094656 + 12738959689 = 110784^2 + 112867^2 .

It is a cyclic number.

It is not a de Polignac number, because 25012054345 - 2¹¹ = 25012052297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25012054349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501205430 + ... + 2501205439.

It is an arithmetic number, because the mean of its divisors is an integer number (7503616305).

Almost surely, 2^25012054345 is an apocalyptic number.

It is an amenable number.

25012054345 is a deficient number, since it is larger than the sum of its proper divisors (5002410875).

25012054345 is an equidigital number, since it uses as much as digits as its factorization.

25012054345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002410874.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 25012054345 its reverse (54345021052), we get a palindrome (79357075397).

The spelling of 25012054345 in words is "twenty-five billion, twelve million, fifty-four thousand, three hundred forty-five".